30897892 has 6 divisors (see below), whose sum is σ = 54071318. Its totient is φ = 15448944.

The previous prime is 30897883. The next prime is 30897899. The reversal of 30897892 is 29879803.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 4024036 = 5184^2 + 2006^2 .

It is not an unprimeable number, because it can be changed into a prime (30897899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862233 + ... + 3862240.

Almost surely, 2^30897892 is an apocalyptic number.

It is an amenable number.

30897892 is a deficient number, since it is larger than the sum of its proper divisors (23173426).

30897892 is a wasteful number, since it uses less digits than its factorization.

30897892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7724477 (or 7724475 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 30897892 is about 5558.5872305830. The cubic root of 30897892 is about 313.7927825344.

The spelling of 30897892 in words is "thirty million, eight hundred ninety-seven thousand, eight hundred ninety-two".