136621026 has 32 divisors (see below), whose sum is σ = 304355520. Its totient is φ = 45427392.

The previous prime is 136621021. The next prime is 136621063. The reversal of 136621026 is 620126631.

136621026 is a `hidden beast` number, since 1 + 36 + 621 + 0 + 2 + 6 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (136621021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20461 + ... + 26303.

It is an arithmetic number, because the mean of its divisors is an integer number (9511110).

Almost surely, 2^136621026 is an apocalyptic number.

136621026 is an abundant number, since it is smaller than the sum of its proper divisors (167734494).

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

136621026 is a wasteful number, since it uses less digits than its factorization.

136621026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 136621026 is about 11688.4997326432. The cubic root of 136621026 is about 515.0378908245.

Adding to 136621026 its reverse (620126631), we get a palindrome (756747657).

The spelling of 136621026 in words is "one hundred thirty-six million, six hundred twenty-one thousand, twenty-six".