20074740 has 48 divisors (see below), whose sum is σ = 64240512. Its totient is φ = 4588416.

The previous prime is 20074727. The next prime is 20074759. The reversal of 20074740 is 4747002.

It is a self number, because there is not a number n which added to its sum of digits gives 20074740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23479 + ... + 24318.

It is an arithmetic number, because the mean of its divisors is an integer number (1338344).

Almost surely, 2^20074740 is an apocalyptic number.

20074740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20074740 is an abundant number, since it is smaller than the sum of its proper divisors (44165772).

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

20074740 is a wasteful number, since it uses less digits than its factorization.

20074740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47816 (or 47814 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20074740 is about 4480.4843488177. The cubic root of 20074740 is about 271.7794672940.

The spelling of 20074740 in words is "twenty million, seventy-four thousand, seven hundred forty".