156113730 has 80 divisors (see below), whose sum is σ = 431200440. Its totient is φ = 40497408.

The previous prime is 156113689. The next prime is 156113731. The reversal of 156113730 is 37311651.

156113730 is a `hidden beast` number, since 15 + 611 + 3 + 7 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 154927809 + 1185921 = 12447^2 + 1089^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 156113694 and 156113703.

It is not an unprimeable number, because it can be changed into a prime (156113731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27366 + ... + 32574.

Almost surely, 2^156113730 is an apocalyptic number.

156113730 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 156113730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215600220).

156113730 is an abundant number, since it is smaller than the sum of its proper divisors (275086710).

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

156113730 is a wasteful number, since it uses less digits than its factorization.

156113730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265 (or 5256 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 156113730 is about 12494.5480110327. The cubic root of 156113730 is about 538.4520483989.

The spelling of 156113730 in words is "one hundred fifty-six million, one hundred thirteen thousand, seven hundred thirty".