30157690 has 8 divisors (see below), whose sum is σ = 54283860. Its totient is φ = 12063072.

The previous prime is 30157681. The next prime is 30157703. The reversal of 30157690 is 9675103.

It can be written as a sum of positive squares in 2 ways, for example, as 29626249 + 531441 = 5443^2 + 729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×30157690² = 1818972532272200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507875 + ... + 1507894.

Almost surely, 2^30157690 is an apocalyptic number.

30157690 is a deficient number, since it is larger than the sum of its proper divisors (24126170).

30157690 is a wasteful number, since it uses less digits than its factorization.

30157690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015776.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 30157690 is about 5491.6017699757. The cubic root of 30157690 is about 311.2667211438.

The spelling of 30157690 in words is "thirty million, one hundred fifty-seven thousand, six hundred ninety".