164622040 has 64 divisors (see below), whose sum is σ = 421666560. Its totient is φ = 57256320.

The previous prime is 164622019. The next prime is 164622043. The reversal of 164622040 is 40226461.

It is a junction number, because it is equal to n+sod(n) for n = 164621996 and 164622014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164622043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1987 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (6588540).

Almost surely, 2^164622040 is an apocalyptic number.

164622040 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 164622040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210833280).

164622040 is an abundant number, since it is smaller than the sum of its proper divisors (257044520).

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

164622040 is a wasteful number, since it uses less digits than its factorization.

164622040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312 (or 16308 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 164622040 is about 12830.5120708411. The cubic root of 164622040 is about 548.0615396107.

The spelling of 164622040 in words is "one hundred sixty-four million, six hundred twenty-two thousand, forty".