28401850 has 24 divisors (see below), whose sum is σ = 53069148. Its totient is φ = 11308800.

The previous prime is 28401847. The next prime is 28401851. The reversal of 28401850 is 5810482.

It can be written as a sum of positive squares in 6 ways, for example, as 9138529 + 19263321 = 3023^2 + 4389^2 .

It is not an unprimeable number, because it can be changed into a prime (28401851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10872 + ... + 13228.

Almost surely, 2^28401850 is an apocalyptic number.

28401850 is a deficient number, since it is larger than the sum of its proper divisors (24667298).

28401850 is a wasteful number, since it uses less digits than its factorization.

28401850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 28401850 is about 5329.3386081201. The cubic root of 28401850 is about 305.1046850180.

The spelling of 28401850 in words is "twenty-eight million, four hundred one thousand, eight hundred fifty".