20613950 has 24 divisors (see below), whose sum is σ = 43820112. Its totient is φ = 7067520.

The previous prime is 20613949. The next prime is 20613997. The reversal of 20613950 is 5931602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29099 + ... + 29798.

It is an arithmetic number, because the mean of its divisors is an integer number (1825838).

Almost surely, 2^20613950 is an apocalyptic number.

20613950 is an abundant number, since it is smaller than the sum of its proper divisors (23206162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20613950 is a wasteful number, since it uses less digits than its factorization.

20613950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58916 (or 58911 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 20613950 is about 4540.2588031961. The cubic root of 20613950 is about 274.1913434283.

The spelling of 20613950 in words is "twenty million, six hundred thirteen thousand, nine hundred fifty".