20274490 has 8 divisors (see below), whose sum is σ = 36494100. Its totient is φ = 8109792.

The previous prime is 20274487. The next prime is 20274503. The reversal of 20274490 is 9447202.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 33489 = 4499^2 + 183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20274490² = 822109889520200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013715 + ... + 1013734.

Almost surely, 2^20274490 is an apocalyptic number.

20274490 is a deficient number, since it is larger than the sum of its proper divisors (16219610).

20274490 is a wasteful number, since it uses less digits than its factorization.

20274490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027456.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20274490 is about 4502.7202888920. The cubic root of 20274490 is about 272.6779243709.

The spelling of 20274490 in words is "twenty million, two hundred seventy-four thousand, four hundred ninety".