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20360970 = 23757219
BaseRepresentation
bin100110110101…
…0111100001010
31102022110000000
41031222330022
520203022340
62004223430
7335031300
oct115527412
942273000
1020360970
1110547553
12699ab76
1342ab816
1429c0270
151bc2d30
hex136af0a

20360970 has 192 divisors, whose sum is σ = 67305600. Its totient is φ = 4408992.

The previous prime is 20360953. The next prime is 20360971. The reversal of 20360970 is 7906302.

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).

It is not an unprimeable number, because it can be changed into a prime (20360971) 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 95 ways as a sum of consecutive naturals, for example, 1071621 + ... + 1071639.

It is an arithmetic number, because the mean of its divisors is an integer number (350550).

Almost surely, 220360970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20360970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33652800).

20360970 is an abundant number, since it is smaller than the sum of its proper divisors (46944630).

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

20360970 is an equidigital number, since it uses as much as digits as its factorization.

20360970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20360970 is about 4512.3131540264. The cubic root of 20360970 is about 273.0650732451.

The spelling of 20360970 in words is "twenty million, three hundred sixty thousand, nine hundred seventy".