28551942 has 24 divisors (see below), whose sum is σ = 65502216. Its totient is φ = 8957376.

The previous prime is 28551937. The next prime is 28551953. The reversal of 28551942 is 24915582.

It is a junction number, because it is equal to n+sod(n) for n = 28551897 and 28551906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46348 + ... + 46959.

It is an arithmetic number, because the mean of its divisors is an integer number (2729259).

Almost surely, 2^28551942 is an apocalyptic number.

28551942 is an abundant number, since it is smaller than the sum of its proper divisors (36950274).

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

28551942 is a wasteful number, since it uses less digits than its factorization.

28551942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93332 (or 93329 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 28551942 is about 5343.4017254929. The cubic root of 28551942 is about 305.6411916347.

The spelling of 28551942 in words is "twenty-eight million, five hundred fifty-one thousand, nine hundred forty-two".