20516950 has 12 divisors (see below), whose sum is σ = 38161620. Its totient is φ = 8206760.

The previous prime is 20516939. The next prime is 20516953. The reversal of 20516950 is 5961502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205120 + ... + 205219.

It is an arithmetic number, because the mean of its divisors is an integer number (3180135).

Almost surely, 2^20516950 is an apocalyptic number.

20516950 is a deficient number, since it is larger than the sum of its proper divisors (17644670).

20516950 is a wasteful number, since it uses less digits than its factorization.

20516950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410351 (or 410346 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 20516950 is about 4529.5639966778. The cubic root of 20516950 is about 273.7605932669.

The spelling of 20516950 in words is "twenty million, five hundred sixteen thousand, nine hundred fifty".