30157974 has 64 divisors (see below), whose sum is σ = 83566080. Its totient is φ = 7832160.

The previous prime is 30157969. The next prime is 30158021. The reversal of 30157974 is 47975103.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^30157974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30157974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41783040).

30157974 is an abundant number, since it is smaller than the sum of its proper divisors (53408106).

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

30157974 is a wasteful number, since it uses less digits than its factorization.

30157974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282 (or 7276 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 30157974 is about 5491.6276275800. The cubic root of 30157974 is about 311.2676982243.

The spelling of 30157974 in words is "thirty million, one hundred fifty-seven thousand, nine hundred seventy-four".