20377473 has 4 divisors (see below), whose sum is σ = 27169968. Its totient is φ = 13584980.

The previous prime is 20377453. The next prime is 20377499. The reversal of 20377473 is 37477302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20377473 - 2¹⁰ = 20376449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20377433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3396243 + ... + 3396248.

It is an arithmetic number, because the mean of its divisors is an integer number (6792492).

Almost surely, 2^20377473 is an apocalyptic number.

It is an amenable number.

20377473 is a deficient number, since it is larger than the sum of its proper divisors (6792495).

20377473 is an equidigital number, since it uses as much as digits as its factorization.

20377473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792494.

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 20377473 is about 4514.1414466098. The cubic root of 20377473 is about 273.1388283419.

The spelling of 20377473 in words is "twenty million, three hundred seventy-seven thousand, four hundred seventy-three".