136530280 has 16 divisors (see below), whose sum is σ = 307193220. Its totient is φ = 54612096.

The previous prime is 136530271. The next prime is 136530283. The reversal of 136530280 is 82035631.

It can be written as a sum of positive squares in 2 ways, for example, as 136282276 + 248004 = 11674^2 + 498^2 .

It is not an unprimeable number, because it can be changed into a prime (136530283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706589 + ... + 1706668.

Almost surely, 2^136530280 is an apocalyptic number.

136530280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136530280 is an abundant number, since it is smaller than the sum of its proper divisors (170662940).

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

136530280 is a wasteful number, since it uses less digits than its factorization.

136530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413268 (or 3413264 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 136530280 is about 11684.6172380613. The cubic root of 136530280 is about 514.9238332703.

The spelling of 136530280 in words is "one hundred thirty-six million, five hundred thirty thousand, two hundred eighty".