20374355 has 4 divisors (see below), whose sum is σ = 24449232. Its totient is φ = 16299480.

The previous prime is 20374351. The next prime is 20374357. The reversal of 20374355 is 55347302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20374355 - 2² = 20374351 is a prime.

It is a super-2 number, since 2×20374355² = 830228683332050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20374351) 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, 2037431 + ... + 2037440.

It is an arithmetic number, because the mean of its divisors is an integer number (6112308).

Almost surely, 2^20374355 is an apocalyptic number.

20374355 is a deficient number, since it is larger than the sum of its proper divisors (4074877).

20374355 is an equidigital number, since it uses as much as digits as its factorization.

20374355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074876.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 20374355 is about 4513.7960742594. The cubic root of 20374355 is about 273.1248964491.

The spelling of 20374355 in words is "twenty million, three hundred seventy-four thousand, three hundred fifty-five".