157285930 has 8 divisors (see below), whose sum is σ = 283114692. Its totient is φ = 62914368.

The previous prime is 157285901. The next prime is 157285939. The reversal of 157285930 is 39582751.

It can be written as a sum of positive squares in 2 ways, for example, as 157176369 + 109561 = 12537^2 + 331^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157285939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7864287 + ... + 7864306.

Almost surely, 2^157285930 is an apocalyptic number.

157285930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157285930 is a deficient number, since it is larger than the sum of its proper divisors (125828762).

157285930 is a wasteful number, since it uses less digits than its factorization.

157285930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15728600.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 157285930 is about 12541.3687450772. The cubic root of 157285930 is about 539.7963681226.

The spelling of 157285930 in words is "one hundred fifty-seven million, two hundred eighty-five thousand, nine hundred thirty".