30897042 has 16 divisors (see below), whose sum is σ = 67411872. Its totient is φ = 9362720.

The previous prime is 30897029. The next prime is 30897043. The reversal of 30897042 is 24079803.

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

It is a junction number, because it is equal to n+sod(n) for n = 30896994 and 30897012.

It is not an unprimeable number, because it can be changed into a prime (30897043) 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, 234003 + ... + 234134.

It is an arithmetic number, because the mean of its divisors is an integer number (4213242).

Almost surely, 2^30897042 is an apocalyptic number.

30897042 is an abundant number, since it is smaller than the sum of its proper divisors (36514830).

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

30897042 is a wasteful number, since it uses less digits than its factorization.

30897042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468153.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 30897042 is about 5558.5107717805. The cubic root of 30897042 is about 313.7899050316.

The spelling of 30897042 in words is "thirty million, eight hundred ninety-seven thousand, forty-two".