30157641 has 12 divisors (see below), whose sum is σ = 43895280. Its totient is φ = 19950840.

The previous prime is 30157619. The next prime is 30157649. The reversal of 30157641 is 14675103.

30157641 is a `hidden beast` number, since 3 + 0 + 15 + 7 + 641 = 666.

It is not a de Polignac number, because 30157641 - 2¹⁰ = 30156617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30157649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11611 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (3657940).

Almost surely, 2^30157641 is an apocalyptic number.

It is an amenable number.

30157641 is a deficient number, since it is larger than the sum of its proper divisors (13737639).

30157641 is a wasteful number, since it uses less digits than its factorization.

30157641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25716 (or 25713 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 30157641 is about 5491.5973086161. The cubic root of 30157641 is about 311.2665525624.

The spelling of 30157641 in words is "thirty million, one hundred fifty-seven thousand, six hundred forty-one".