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52039680 = 212357112
BaseRepresentation
bin1100011010000…
…1000000000000
310121220220000120
43012201000000
5101310232210
65055220240
71201221120
oct306410000
9117826016
1052039680
1127414200
1215517680
13aa20914
146ca8c80
15487e270
hex31a1000

52039680 has 312 divisors, whose sum is σ = 209165376. Its totient is φ = 10813440.

The previous prime is 52039667. The next prime is 52039681. The reversal of 52039680 is 8693025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (52039681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4730875 + ... + 4730885.

Almost surely, 252039680 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 52039680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104582688).

52039680 is an abundant number, since it is smaller than the sum of its proper divisors (157125696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52039680 is a wasteful number, since it uses less digits than its factorization.

52039680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 52039680 is about 7213.8533392356. The cubic root of 52039680 is about 373.3460313141.

The spelling of 52039680 in words is "fifty-two million, thirty-nine thousand, six hundred eighty".