136923220 has 48 divisors (see below), whose sum is σ = 335623680. Its totient is φ = 45944064.

The previous prime is 136923217. The next prime is 136923233. The reversal of 136923220 is 22329631.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825 + ... + 16984.

It is an arithmetic number, because the mean of its divisors is an integer number (6992160).

Almost surely, 2^136923220 is an apocalyptic number.

136923220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136923220 is an abundant number, since it is smaller than the sum of its proper divisors (198700460).

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

136923220 is a wasteful number, since it uses less digits than its factorization.

136923220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20872 (or 20870 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 136923220 is about 11701.4195720007. The cubic root of 136923220 is about 515.4173510745.

The spelling of 136923220 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, two hundred twenty".