23250402 has 120 divisors (see below), whose sum is σ = 63314460. Its totient is φ = 6350400.

The previous prime is 23250389. The next prime is 23250413. The reversal of 23250402 is 20405232.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 2099601 = 4599^2 + 1449^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 230152 + ... + 230252.

Almost surely, 2^23250402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23250402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31657230).

23250402 is an abundant number, since it is smaller than the sum of its proper divisors (40064058).

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

23250402 is a wasteful number, since it uses less digits than its factorization.

23250402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23250402 is about 4821.8670657744. The cubic root of 23250402 is about 285.4150186229.

Adding to 23250402 its reverse (20405232), we get a palindrome (43655634).

The spelling of 23250402 in words is "twenty-three million, two hundred fifty thousand, four hundred two".