20474524 has 12 divisors (see below), whose sum is σ = 40949104. Its totient is φ = 8774784.

The previous prime is 20474507. The next prime is 20474549. The reversal of 20474524 is 42547402.

It is a happy number.

20474524 is an admirable number.

It is a super-2 number, since 2×20474524² = 838412266053152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 731233 = 20474524 / (2 + 0 + 4 + 7 + 4 + 5 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 20474492 and 20474501.

It is a congruent number.

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, 365589 + ... + 365644.

Almost surely, 2^20474524 is an apocalyptic number.

It is an amenable number.

20474524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20474524 is a wasteful number, since it uses less digits than its factorization.

20474524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731244 (or 731242 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 20474524 is about 4524.8783409060. The cubic root of 20474524 is about 273.5717643251.

The spelling of 20474524 in words is "twenty million, four hundred seventy-four thousand, five hundred twenty-four".