137570730 has 32 divisors (see below), whose sum is σ = 360186048. Its totient is φ = 33350400.

The previous prime is 137570701. The next prime is 137570731. The reversal of 137570730 is 37075731.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 137570691 and 137570700.

It is not an unprimeable number, because it can be changed into a prime (137570731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208111 + ... + 208770.

It is an arithmetic number, because the mean of its divisors is an integer number (11255814).

Almost surely, 2^137570730 is an apocalyptic number.

137570730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137570730 is an abundant number, since it is smaller than the sum of its proper divisors (222615318).

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

137570730 is a wasteful number, since it uses less digits than its factorization.

137570730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416902.

The product of its (nonzero) digits is 15435, while the sum is 33.

The square root of 137570730 is about 11729.0549491423. The cubic root of 137570730 is about 516.2285433728.

The spelling of 137570730 in words is "one hundred thirty-seven million, five hundred seventy thousand, seven hundred thirty".