28351331040 has 96 divisors (see below), whose sum is σ = 91383659136. Its totient is φ = 7384527360.

The previous prime is 28351331003. The next prime is 28351331093. The reversal of 28351331040 is 4013315382.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28351330989 and 28351331007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666166 + ... + 707445.

It is an arithmetic number, because the mean of its divisors is an integer number (951913116).

Almost surely, 2^28351331040 is an apocalyptic number.

28351331040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28351331040 is an abundant number, since it is smaller than the sum of its proper divisors (63032328096).

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

28351331040 is a wasteful number, since it uses less digits than its factorization.

28351331040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373672 (or 1373664 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 28351331040 in words is "twenty-eight billion, three hundred fifty-one million, three hundred thirty-one thousand, forty".