70772538 has 16 divisors (see below), whose sum is σ = 141813216. Its totient is φ = 23546160.

The previous prime is 70772531. The next prime is 70772563. The reversal of 70772538 is 83527707.

It is a super-2 number, since 2×70772538² = 10017504269922888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70772496 and 70772505.

It is not an unprimeable number, because it can be changed into a prime (70772531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7656 + ... + 14147.

It is an arithmetic number, because the mean of its divisors is an integer number (8863326).

Almost surely, 2^70772538 is an apocalyptic number.

70772538 is an abundant number, since it is smaller than the sum of its proper divisors (71040678).

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

70772538 is a wasteful number, since it uses less digits than its factorization.

70772538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22349.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 70772538 is about 8412.6415589873. The cubic root of 70772538 is about 413.6391053131.

The spelling of 70772538 in words is "seventy million, seven hundred seventy-two thousand, five hundred thirty-eight".