20293902 has 56 divisors (see below), whose sum is σ = 47217600. Its totient is φ = 6531840.

The previous prime is 20293879. The next prime is 20293909. The reversal of 20293902 is 20939202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293909) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 44974 + ... + 45422.

Almost surely, 2^20293902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20293902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23608800).

20293902 is an abundant number, since it is smaller than the sum of its proper divisors (26923698).

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

20293902 is an equidigital number, since it uses as much as digits as its factorization.

20293902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20293902 is about 4504.8753589861. The cubic root of 20293902 is about 272.7649226204.

The spelling of 20293902 in words is "twenty million, two hundred ninety-three thousand, nine hundred two".