28535816740 has 12 divisors (see below), whose sum is σ = 59925215196. Its totient is φ = 11414326688.

The previous prime is 28535816737. The next prime is 28535816741. The reversal of 28535816740 is 4761853582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5214861796 + 23320954944 = 72214^2 + 152712^2 .

It is not an unprimeable number, because it can be changed into a prime (28535816741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713395399 + ... + 713395438.

It is an arithmetic number, because the mean of its divisors is an integer number (4993767933).

Almost surely, 2^28535816740 is an apocalyptic number.

28535816740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28535816740 is an abundant number, since it is smaller than the sum of its proper divisors (31389398456).

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

28535816740 is a wasteful number, since it uses less digits than its factorization.

28535816740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426790846 (or 1426790844 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 28535816740 in words is "twenty-eight billion, five hundred thirty-five million, eight hundred sixteen thousand, seven hundred forty".