20752641 has 24 divisors (see below), whose sum is σ = 36895040. Its totient is φ = 10946016.

The previous prime is 20752639. The next prime is 20752643. The reversal of 20752641 is 14625702.

It is an interprime number because it is at equal distance from previous prime (20752639) and next prime (20752643).

It is not a de Polignac number, because 20752641 - 2¹ = 20752639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20752643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11851 + ... + 13488.

Almost surely, 2^20752641 is an apocalyptic number.

20752641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20752641 is a deficient number, since it is larger than the sum of its proper divisors (16142399).

20752641 is a wasteful number, since it uses less digits than its factorization.

20752641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25365 (or 25362 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20752641 is about 4555.5066677594. The cubic root of 20752641 is about 274.8048908062.

The spelling of 20752641 in words is "twenty million, seven hundred fifty-two thousand, six hundred forty-one".