20274648 has 16 divisors (see below), whose sum is σ = 50686680. Its totient is φ = 6758208.

The previous prime is 20274647. The next prime is 20274677. The reversal of 20274648 is 84647202.

It is a super-2 number, since 2×20274648² = 822122703047808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274641) 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, 422365 + ... + 422412.

Almost surely, 2^20274648 is an apocalyptic number.

It is an amenable number.

20274648 is an abundant number, since it is smaller than the sum of its proper divisors (30412032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20274648 is a wasteful number, since it uses less digits than its factorization.

20274648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844786 (or 844782 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 20274648 is about 4502.7378338073. The cubic root of 20274648 is about 272.6786326995.

The spelling of 20274648 in words is "twenty million, two hundred seventy-four thousand, six hundred forty-eight".