20377480 has 32 divisors (see below), whose sum is σ = 45979200. Its totient is φ = 8127936.

The previous prime is 20377453. The next prime is 20377499. The reversal of 20377480 is 8477302.

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, 24349 + ... + 25171.

It is an arithmetic number, because the mean of its divisors is an integer number (1436850).

Almost surely, 2^20377480 is an apocalyptic number.

20377480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20377480 is an abundant number, since it is smaller than the sum of its proper divisors (25601720).

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

20377480 is a wasteful number, since it uses less digits than its factorization.

20377480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20377480 is about 4514.1422219509. The cubic root of 20377480 is about 273.1388596178.

The spelling of 20377480 in words is "twenty million, three hundred seventy-seven thousand, four hundred eighty".