20377379 has 16 divisors (see below), whose sum is σ = 23362560. Its totient is φ = 17592960.

The previous prime is 20377349. The next prime is 20377397. The reversal of 20377379 is 97377302.

It is a de Polignac number, because none of the positive numbers 2^k-20377379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20377309) 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, 60299 + ... + 60635.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160).

Almost surely, 2^20377379 is an apocalyptic number.

20377379 is a deficient number, since it is larger than the sum of its proper divisors (2985181).

20377379 is a wasteful number, since it uses less digits than its factorization.

20377379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its (nonzero) digits is 55566, while the sum is 38.

The square root of 20377379 is about 4514.1310348726. The cubic root of 20377379 is about 273.1384083505.

The spelling of 20377379 in words is "twenty million, three hundred seventy-seven thousand, three hundred seventy-nine".