157387428 has 96 divisors (see below), whose sum is σ = 471381120. Its totient is φ = 44881920.

The previous prime is 157387427. The next prime is 157387429. The reversal of 157387428 is 824783751.

157387428 is a `hidden beast` number, since 1 + 573 + 8 + 74 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (157387427) and next prime (157387429).

It is not an unprimeable number, because it can be changed into a prime (157387423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16300 + ... + 24092.

It is an arithmetic number, because the mean of its divisors is an integer number (4910220).

Almost surely, 2^157387428 is an apocalyptic number.

157387428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157387428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235690560).

157387428 is an abundant number, since it is smaller than the sum of its proper divisors (313993692).

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

157387428 is a wasteful number, since it uses less digits than its factorization.

157387428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834 (or 7826 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 157387428 is about 12545.4146204898. The cubic root of 157387428 is about 539.9124549437.

The spelling of 157387428 in words is "one hundred fifty-seven million, three hundred eighty-seven thousand, four hundred twenty-eight".