102400404 has 36 divisors (see below), whose sum is σ = 244189344. Its totient is φ = 33398576.

The previous prime is 102400387. The next prime is 102400427. The reversal of 102400404 is 404004201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24577 + ... + 28439.

Almost surely, 2^102400404 is an apocalyptic number.

It is an amenable number.

102400404 is an abundant number, since it is smaller than the sum of its proper divisors (141788940).

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

102400404 is a wasteful number, since it uses less digits than its factorization.

102400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964 (or 3915 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 102400404 is about 10119.3084743969. The cubic root of 102400404 is about 467.8434533753.

Adding to 102400404 its reverse (404004201), we get a palindrome (506404605).

The spelling of 102400404 in words is "one hundred two million, four hundred thousand, four hundred four".