136466220 has 72 divisors (see below), whose sum is σ = 420022512. Its totient is φ = 33080960.

The previous prime is 136466207. The next prime is 136466263. The reversal of 136466220 is 22664631.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2139 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (5833646).

Almost surely, 2^136466220 is an apocalyptic number.

136466220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136466220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210011256).

136466220 is an abundant number, since it is smaller than the sum of its proper divisors (283556292).

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

136466220 is a wasteful number, since it uses less digits than its factorization.

136466220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18831 (or 18818 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 136466220 is about 11681.8757055535. The cubic root of 136466220 is about 514.8432865932.

The spelling of 136466220 in words is "one hundred thirty-six million, four hundred sixty-six thousand, two hundred twenty".