20474368 has 20 divisors (see below), whose sum is σ = 40909770. Its totient is φ = 10236928.

The previous prime is 20474359. The next prime is 20474369. The reversal of 20474368 is 86347402.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 831744 = 4432^2 + 912^2 .

It is not an unprimeable number, because it can be changed into a prime (20474369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19483 + ... + 20506.

Almost surely, 2^20474368 is an apocalyptic number.

It is an amenable number.

20474368 is a deficient number, since it is larger than the sum of its proper divisors (20435402).

20474368 is an frugal number, since it uses more digits than its factorization.

20474368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007 (or 39991 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 20474368 is about 4524.8611028406. The cubic root of 20474368 is about 273.5710695217.

The spelling of 20474368 in words is "twenty million, four hundred seventy-four thousand, three hundred sixty-eight".