157637620 has 96 divisors (see below), whose sum is σ = 401345280. Its totient is φ = 50856960.

The previous prime is 157637609. The next prime is 157637621. The reversal of 157637620 is 26736751.

It is a self number, because there is not a number n which added to its sum of digits gives 157637620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157637621) 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, 165987 + ... + 166933.

It is an arithmetic number, because the mean of its divisors is an integer number (4180680).

Almost surely, 2^157637620 is an apocalyptic number.

157637620 is a gapful number since it is divisible by the number (10) 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 157637620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200672640).

157637620 is an abundant number, since it is smaller than the sum of its proper divisors (243707660).

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

157637620 is a wasteful number, since it uses less digits than its factorization.

157637620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 157637620 is about 12555.3821128630. The cubic root of 157637620 is about 540.1983953222.

The spelling of 157637620 in words is "one hundred fifty-seven million, six hundred thirty-seven thousand, six hundred twenty".