157645470 has 64 divisors (see below), whose sum is σ = 400308480. Its totient is φ = 39621888.

The previous prime is 157645417. The next prime is 157645513. The reversal of 157645470 is 74546751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132217 + ... + 133403.

It is an arithmetic number, because the mean of its divisors is an integer number (6254820).

Almost surely, 2^157645470 is an apocalyptic number.

157645470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157645470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200154240).

157645470 is an abundant number, since it is smaller than the sum of its proper divisors (242663010).

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

157645470 is a wasteful number, since it uses less digits than its factorization.

157645470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 157645470 is about 12555.6947239091. The cubic root of 157645470 is about 540.2073620629.

The spelling of 157645470 in words is "one hundred fifty-seven million, six hundred forty-five thousand, four hundred seventy".