164252540 has 24 divisors (see below), whose sum is σ = 346446240. Its totient is φ = 65412288.

The previous prime is 164252537. The next prime is 164252593. The reversal of 164252540 is 45252461.

It is a congruent number.

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, 13352 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (14435260).

Almost surely, 2^164252540 is an apocalyptic number.

164252540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164252540 is an abundant number, since it is smaller than the sum of its proper divisors (182193700).

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

164252540 is a wasteful number, since it uses less digits than its factorization.

164252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36101 (or 36099 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 164252540 is about 12816.1047124312. The cubic root of 164252540 is about 547.6511845922.

It can be divided in two parts, 1642 and 52540, that multiplied together give a triangular number (86270680 = T₁₃₁₃₅).

The spelling of 164252540 in words is "one hundred sixty-four million, two hundred fifty-two thousand, five hundred forty".