28002777952 has 24 divisors (see below), whose sum is σ = 55261446912. Its totient is φ = 13968124800.

The previous prime is 28002777947. The next prime is 28002777977. The reversal of 28002777952 is 25977720082.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28002777896 and 28002777905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025824 + ... + 1052767.

It is an arithmetic number, because the mean of its divisors is an integer number (2302560288).

Almost surely, 2^28002777952 is an apocalyptic number.

It is an amenable number.

28002777952 is a deficient number, since it is larger than the sum of its proper divisors (27258668960).

28002777952 is a wasteful number, since it uses less digits than its factorization.

28002777952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079022 (or 2079014 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 28002777952 in words is "twenty-eight billion, two million, seven hundred seventy-seven thousand, nine hundred fifty-two".