20952459 has 64 divisors (see below), whose sum is σ = 36864000. Its totient is φ = 11625120.

The previous prime is 20952457. The next prime is 20952461. The reversal of 20952459 is 95425902.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20952457) and next prime (20952461).

It is not a de Polignac number, because 20952459 - 2¹ = 20952457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20952457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 265182 + ... + 265260.

It is an arithmetic number, because the mean of its divisors is an integer number (576000).

Almost surely, 2^20952459 is an apocalyptic number.

20952459 is a deficient number, since it is larger than the sum of its proper divisors (15911541).

20952459 is a wasteful number, since it uses less digits than its factorization.

20952459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 20952459 is about 4577.3856075275. The cubic root of 20952459 is about 275.6840666599.

It can be divided in two parts, 2095 and 2459, that added together give a palindrome (4554).

The spelling of 20952459 in words is "twenty million, nine hundred fifty-two thousand, four hundred fifty-nine".