20265450 has 48 divisors (see below), whose sum is σ = 50621760. Its totient is φ = 5365120.

The previous prime is 20265433. The next prime is 20265467. The reversal of 20265450 is 5456202.

It is an interprime number because it is at equal distance from previous prime (20265433) and next prime (20265467).

It is a self number, because there is not a number n which added to its sum of digits gives 20265450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24646 + ... + 25454.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^20265450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20265450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25310880).

20265450 is an abundant number, since it is smaller than the sum of its proper divisors (30356310).

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

20265450 is a wasteful number, since it uses less digits than its factorization.

20265450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20265450 is about 4501.7163393532. The cubic root of 20265450 is about 272.6373910884.

The spelling of 20265450 in words is "twenty million, two hundred sixty-five thousand, four hundred fifty".