136421886 has 64 divisors (see below), whose sum is σ = 296626176. Its totient is φ = 41731200.

The previous prime is 136421869. The next prime is 136421899. The reversal of 136421886 is 688124631.

It is a super-2 number, since 2×136421886² = 37221861959593992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295696 + ... + 296156.

It is an arithmetic number, because the mean of its divisors is an integer number (4634784).

Almost surely, 2^136421886 is an apocalyptic number.

136421886 is an abundant number, since it is smaller than the sum of its proper divisors (160204290).

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

136421886 is a wasteful number, since it uses less digits than its factorization.

136421886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577.

The product of its digits is 55296, while the sum is 39.

The square root of 136421886 is about 11679.9779965546. The cubic root of 136421886 is about 514.7875278996.

The spelling of 136421886 in words is "one hundred thirty-six million, four hundred twenty-one thousand, eight hundred eighty-six".