30157402 has 16 divisors (see below), whose sum is σ = 49433472. Its totient is φ = 13684320.

The previous prime is 30157373. The next prime is 30157403. The reversal of 30157402 is 20475103.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (30157403) 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, 22063 + ... + 23389.

It is an arithmetic number, because the mean of its divisors is an integer number (3089592).

Almost surely, 2^30157402 is an apocalyptic number.

30157402 is a deficient number, since it is larger than the sum of its proper divisors (19276070).

30157402 is a wasteful number, since it uses less digits than its factorization.

30157402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30157402 is about 5491.5755480554. The cubic root of 30157402 is about 311.2657302954.

The spelling of 30157402 in words is "thirty million, one hundred fifty-seven thousand, four hundred two".