20274528 has 24 divisors (see below), whose sum is σ = 53220888. Its totient is φ = 6758144.

The previous prime is 20274521. The next prime is 20274533. The reversal of 20274528 is 82547202.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×20274528² = 822112971245568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20274495 and 20274504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274521) 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, 105501 + ... + 105692.

It is an arithmetic number, because the mean of its divisors is an integer number (2217537).

Almost surely, 2^20274528 is an apocalyptic number.

It is an amenable number.

20274528 is an abundant number, since it is smaller than the sum of its proper divisors (32946360).

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

20274528 is a wasteful number, since it uses less digits than its factorization.

20274528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211206 (or 211198 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 20274528 is about 4502.7245085615. The cubic root of 20274528 is about 272.6780947287.

It can be divided in two parts, 20274 and 528, that added together give a palindrome (20802).

The spelling of 20274528 in words is "twenty million, two hundred seventy-four thousand, five hundred twenty-eight".