30857396 has 6 divisors (see below), whose sum is σ = 54000450. Its totient is φ = 15428696.

The previous prime is 30857389. The next prime is 30857401. The reversal of 30857396 is 69375803.

It can be written as a sum of positive squares in only one way, i.e., 27667600 + 3189796 = 5260^2 + 1786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3857171 + ... + 3857178.

It is an arithmetic number, because the mean of its divisors is an integer number (9000075).

Almost surely, 2^30857396 is an apocalyptic number.

It is an amenable number.

30857396 is a deficient number, since it is larger than the sum of its proper divisors (23143054).

30857396 is a wasteful number, since it uses less digits than its factorization.

30857396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714353 (or 7714351 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 30857396 is about 5554.9433840499. The cubic root of 30857396 is about 313.6556328528.

The spelling of 30857396 in words is "thirty million, eight hundred fifty-seven thousand, three hundred ninety-six".