164526820 has 24 divisors (see below), whose sum is σ = 360529344. Its totient is φ = 62949216.

The previous prime is 164526793. The next prime is 164526823. The reversal of 164526820 is 28625461.

It is not an unprimeable number, because it can be changed into a prime (164526823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178374 + ... + 179293.

It is an arithmetic number, because the mean of its divisors is an integer number (15022056).

Almost surely, 2^164526820 is an apocalyptic number.

164526820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164526820 is an abundant number, since it is smaller than the sum of its proper divisors (196002524).

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

164526820 is a wasteful number, since it uses less digits than its factorization.

164526820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357699 (or 357697 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 164526820 is about 12826.8008482240. The cubic root of 164526820 is about 547.9558500670.

The spelling of 164526820 in words is "one hundred sixty-four million, five hundred twenty-six thousand, eight hundred twenty".