30769872 has 40 divisors (see below), whose sum is σ = 90845376. Its totient is φ = 8791296.

The previous prime is 30769867. The next prime is 30769931. The reversal of 30769872 is 27896703.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45453 + ... + 46124.

Almost surely, 2^30769872 is an apocalyptic number.

It is an amenable number.

30769872 is an abundant number, since it is smaller than the sum of its proper divisors (60075504).

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

30769872 is a wasteful number, since it uses less digits than its factorization.

30769872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91595 (or 91589 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 30769872 is about 5547.0597617116. The cubic root of 30769872 is about 313.3588008071.

The spelling of 30769872 in words is "thirty million, seven hundred sixty-nine thousand, eight hundred seventy-two".