20757004 has 6 divisors (see below), whose sum is σ = 36324764. Its totient is φ = 10378500.

The previous prime is 20757001. The next prime is 20757031. The reversal of 20757004 is 40075702.

It is a self number, because there is not a number n which added to its sum of digits gives 20757004.

It is not an unprimeable number, because it can be changed into a prime (20757001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2594622 + ... + 2594629.

Almost surely, 2^20757004 is an apocalyptic number.

It is an amenable number.

20757004 is a deficient number, since it is larger than the sum of its proper divisors (15567760).

20757004 is a wasteful number, since it uses less digits than its factorization.

20757004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189255 (or 5189253 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20757004 is about 4555.9855135854. The cubic root of 20757004 is about 274.8241476280.

The spelling of 20757004 in words is "twenty million, seven hundred fifty-seven thousand, four".