20164074 has 64 divisors (see below), whose sum is σ = 50429952. Its totient is φ = 5241600.

The previous prime is 20164063. The next prime is 20164093. The reversal of 20164074 is 47046102.

20164074 = T₄₃₅ + T₄₃₆ + ... + T₅₈₇.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21679 + ... + 22589.

It is an arithmetic number, because the mean of its divisors is an integer number (787968).

Almost surely, 2^20164074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20164074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25214976).

20164074 is an abundant number, since it is smaller than the sum of its proper divisors (30265878).

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

20164074 is a wasteful number, since it uses less digits than its factorization.

20164074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20164074 is about 4490.4425171691. The cubic root of 20164074 is about 272.1820166515.

The spelling of 20164074 in words is "twenty million, one hundred sixty-four thousand, seventy-four".