20752030 has 16 divisors (see below), whose sum is σ = 40227264. Its totient is φ = 7662240.

The previous prime is 20752021. The next prime is 20752031. The reversal of 20752030 is 3025702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20751989 and 20752007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79686 + ... + 79945.

It is an arithmetic number, because the mean of its divisors is an integer number (2514204).

Almost surely, 2^20752030 is an apocalyptic number.

20752030 is a deficient number, since it is larger than the sum of its proper divisors (19475234).

20752030 is a wasteful number, since it uses less digits than its factorization.

20752030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159651.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20752030 is about 4555.4396055705. The cubic root of 20752030 is about 274.8021938413.

Adding to 20752030 its reverse (3025702), we get a palindrome (23777732).

The spelling of 20752030 in words is "twenty million, seven hundred fifty-two thousand, thirty".