20403950 has 48 divisors (see below), whose sum is σ = 43893024. Its totient is φ = 6912000.

The previous prime is 20403941. The next prime is 20403953. The reversal of 20403950 is 5930402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403953) 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, 33650 + ... + 34250.

It is an arithmetic number, because the mean of its divisors is an integer number (914438).

Almost surely, 2^20403950 is an apocalyptic number.

20403950 is an abundant number, since it is smaller than the sum of its proper divisors (23489074).

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

20403950 is a wasteful number, since it uses less digits than its factorization.

20403950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20403950 is about 4517.0731674393. The cubic root of 20403950 is about 273.2570760235.

The spelling of 20403950 in words is "twenty million, four hundred three thousand, nine hundred fifty".