164323240 has 32 divisors (see below), whose sum is σ = 370094760. Its totient is φ = 65664000.

The previous prime is 164323231. The next prime is 164323273. The reversal of 164323240 is 42323461.

It can be written as a sum of positive squares in 4 ways, for example, as 108701476 + 55621764 = 10426^2 + 7458^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70900 + ... + 73180.

Almost surely, 2^164323240 is an apocalyptic number.

164323240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164323240 is an abundant number, since it is smaller than the sum of its proper divisors (205771520).

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

164323240 is a wasteful number, since it uses less digits than its factorization.

164323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093 (or 4089 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 164323240 is about 12818.8626640588. The cubic root of 164323240 is about 547.7297493535.

The spelling of 164323240 in words is "one hundred sixty-four million, three hundred twenty-three thousand, two hundred forty".