| Base | Representation |
|---|---|
| bin | 1110101101110… |
| … | …0101100001000 |
| 3 | 11022010202210000 |
| 4 | 3223130230020 |
| 5 | 111300040402 |
| 6 | 10042523000 |
| 7 | 1346423430 |
| oct | 353345410 |
| 9 | 138122700 |
| 10 | 61721352 |
| 11 | 31927190 |
| 12 | 18806460 |
| 13 | ca30614 |
| 14 | 82a92c0 |
| 15 | 5642c1c |
| hex | 3adcb08 |
61721352 has 160 divisors (see below), whose sum is σ = 215709120. Its totient is φ = 16018560.
The previous prime is 61721333. The next prime is 61721353. The reversal of 61721352 is 25312716.
It is a happy number.
61721352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (27).
Its product of digits (2520) is a multiple of the sum of its prime divisors (1260).
It is not an unprimeable number, because it can be changed into a prime (61721353) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 49278 + ... + 50514.
It is an arithmetic number, because the mean of its divisors is an integer number (1348182).
Almost surely, 261721352 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 61721352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107854560).
61721352 is an abundant number, since it is smaller than the sum of its proper divisors (153987768).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61721352 is a wasteful number, since it uses less digits than its factorization.
61721352 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1273 (or 1260 counting only the distinct ones).
The product of its digits is 2520, while the sum is 27.
The square root of 61721352 is about 7856.2937826942. The cubic root of 61721352 is about 395.1953357424.
The spelling of 61721352 in words is "sixty-one million, seven hundred twenty-one thousand, three hundred fifty-two".
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