157213470 has 32 divisors (see below), whose sum is σ = 383502240. Its totient is φ = 41235840.

The previous prime is 157213411. The next prime is 157213489. The reversal of 157213470 is 74312751.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41125 + ... + 44784.

It is an arithmetic number, because the mean of its divisors is an integer number (11984445).

Almost surely, 2^157213470 is an apocalyptic number.

157213470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157213470 is an abundant number, since it is smaller than the sum of its proper divisors (226288770).

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

157213470 is a wasteful number, since it uses less digits than its factorization.

157213470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85980.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 157213470 is about 12538.4795728988. The cubic root of 157213470 is about 539.7134625234.

It can be divided in two parts, 15721 and 3470, that added together give a palindrome (19191).

The spelling of 157213470 in words is "one hundred fifty-seven million, two hundred thirteen thousand, four hundred seventy".