20377290 has 32 divisors (see below), whose sum is σ = 49346496. Its totient is φ = 5384960.

The previous prime is 20377283. The next prime is 20377307. The reversal of 20377290 is 9277302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385 + ... + 6395.

It is an arithmetic number, because the mean of its divisors is an integer number (1542078).

Almost surely, 2^20377290 is an apocalyptic number.

20377290 is an abundant number, since it is smaller than the sum of its proper divisors (28969206).

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

20377290 is a wasteful number, since it uses less digits than its factorization.

20377290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 20377290 is about 4514.1211769291. The cubic root of 20377290 is about 273.1380106979.

The spelling of 20377290 in words is "twenty million, three hundred seventy-seven thousand, two hundred ninety".