20377164 has 48 divisors (see below), whose sum is σ = 49392000. Its totient is φ = 6533760.

The previous prime is 20377163. The next prime is 20377171. The reversal of 20377164 is 46177302.

20377164 = T₁₇₁ + T₁₇₂ + ... + T₅₀₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377163) 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, 40587 + ... + 41085.

It is an arithmetic number, because the mean of its divisors is an integer number (1029000).

Almost surely, 2^20377164 is an apocalyptic number.

It is an amenable number.

20377164 is an abundant number, since it is smaller than the sum of its proper divisors (29014836).

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

20377164 is a wasteful number, since it uses less digits than its factorization.

20377164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20377164 is about 4514.1072207027. The cubic root of 20377164 is about 273.1374477271.

The spelling of 20377164 in words is "twenty million, three hundred seventy-seven thousand, one hundred sixty-four".