157287312 has 160 divisors (see below), whose sum is σ = 555797760. Its totient is φ = 41472000.

The previous prime is 157287311. The next prime is 157287313. The reversal of 157287312 is 213782751.

157287312 is a `hidden beast` number, since 1 + 572 + 8 + 73 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (157287311) and next prime (157287313).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (157287311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37312 + ... + 41312.

It is an arithmetic number, because the mean of its divisors is an integer number (3473736).

Almost surely, 2^157287312 is an apocalyptic number.

157287312 is a gapful number since it is divisible by the number (12) 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 157287312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277898880).

157287312 is an abundant number, since it is smaller than the sum of its proper divisors (398510448).

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

157287312 is a wasteful number, since it uses less digits than its factorization.

157287312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038 (or 4026 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 157287312 is about 12541.4238426105. The cubic root of 157287312 is about 539.7979490997.

The spelling of 157287312 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, three hundred twelve".