28173667404 has 24 divisors (see below), whose sum is σ = 67137251328. Its totient is φ = 9191409040.

The previous prime is 28173667399. The next prime is 28173667409. The reversal of 28173667404 is 40476637182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28173667399) and next prime (28173667409).

It is not an unprimeable number, because it can be changed into a prime (28173667409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24976092 + ... + 24977219.

It is an arithmetic number, because the mean of its divisors is an integer number (2797385472).

Almost surely, 2^28173667404 is an apocalyptic number.

It is an amenable number.

28173667404 is an abundant number, since it is smaller than the sum of its proper divisors (38963583924).

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

28173667404 is a wasteful number, since it uses less digits than its factorization.

28173667404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49953365 (or 49953363 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 28173667404 in words is "twenty-eight billion, one hundred seventy-three million, six hundred sixty-seven thousand, four hundred four".