20624252 has 24 divisors (see below), whose sum is σ = 39919152. Its totient is φ = 9244800.

The previous prime is 20624251. The next prime is 20624257. The reversal of 20624252 is 25242602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624251) 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, 2 + ... + 6422.

It is an arithmetic number, because the mean of its divisors is an integer number (1663298).

Almost surely, 2^20624252 is an apocalyptic number.

20624252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20624252 is a deficient number, since it is larger than the sum of its proper divisors (19294900).

20624252 is a wasteful number, since it uses less digits than its factorization.

20624252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509 (or 6507 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20624252 is about 4541.3931783099. The cubic root of 20624252 is about 274.2370123207.

Adding to 20624252 its reverse (25242602), we get a palindrome (45866854).

The spelling of 20624252 in words is "twenty million, six hundred twenty-four thousand, two hundred fifty-two".