156147730 has 16 divisors (see below), whose sum is σ = 284917464. Its totient is φ = 61603200.

The previous prime is 156147707. The next prime is 156147731. The reversal of 156147730 is 37741651.

It can be written as a sum of positive squares in 4 ways, for example, as 141348321 + 14799409 = 11889^2 + 3847^2 .

It is a super-2 number, since 2×156147730² = 48764227168305800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156147731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106221 + ... + 107680.

Almost surely, 2^156147730 is an apocalyptic number.

156147730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156147730 is a deficient number, since it is larger than the sum of its proper divisors (128769734).

156147730 is a wasteful number, since it uses less digits than its factorization.

156147730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213981.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 156147730 is about 12495.9085303951. The cubic root of 156147730 is about 538.4911353747.

The spelling of 156147730 in words is "one hundred fifty-six million, one hundred forty-seven thousand, seven hundred thirty".