23902002 has 12 divisors (see below), whose sum is σ = 51787710. Its totient is φ = 7967328.

The previous prime is 23902001. The next prime is 23902007. The reversal of 23902002 is 20020932.

It can be written as a sum of positive squares in only one way, i.e., 23824161 + 77841 = 4881^2 + 279^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1327889 = 23902002 / (2 + 3 + 9 + 0 + 2 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (23902001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663927 + ... + 663962.

Almost surely, 2^23902002 is an apocalyptic number.

23902002 is an abundant number, since it is smaller than the sum of its proper divisors (27885708).

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

23902002 is a wasteful number, since it uses less digits than its factorization.

23902002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327897 (or 1327894 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 23902002 is about 4888.9673756326. The cubic root of 23902002 is about 288.0567741082.

Adding to 23902002 its reverse (20020932), we get a palindrome (43922934).

The spelling of 23902002 in words is "twenty-three million, nine hundred two thousand, two".