20725748 has 12 divisors (see below), whose sum is σ = 36305472. Its totient is φ = 10352760.

The previous prime is 20725741. The next prime is 20725753. The reversal of 20725748 is 84752702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20725741) 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, 3893 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (3025456).

Almost surely, 2^20725748 is an apocalyptic number.

It is an amenable number.

20725748 is a deficient number, since it is larger than the sum of its proper divisors (15579724).

20725748 is a wasteful number, since it uses less digits than its factorization.

20725748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062 (or 5060 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 20725748 is about 4552.5540084660. The cubic root of 20725748 is about 274.6861344744.

The spelling of 20725748 in words is "twenty million, seven hundred twenty-five thousand, seven hundred forty-eight".