136561260 has 48 divisors (see below), whose sum is σ = 417134592. Its totient is φ = 33105600.

The previous prime is 136561259. The next prime is 136561267. The reversal of 136561260 is 62165631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (136561267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102796 + ... + 104115.

It is an arithmetic number, because the mean of its divisors is an integer number (8690304).

Almost surely, 2^136561260 is an apocalyptic number.

136561260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136561260 is an abundant number, since it is smaller than the sum of its proper divisors (280573332).

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

136561260 is a wasteful number, since it uses less digits than its factorization.

136561260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206934 (or 206932 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 136561260 is about 11685.9428374436. The cubic root of 136561260 is about 514.9627773393.

The spelling of 136561260 in words is "one hundred thirty-six million, five hundred sixty-one thousand, two hundred sixty".