28395353540 has 48 divisors (see below), whose sum is σ = 60117422400. Its totient is φ = 11265674112.

The previous prime is 28395353507. The next prime is 28395353551. The reversal of 28395353540 is 4535359382.

It is a super-2 number, since 2×28395353540² (a number of 22 digits) contains 22 as substring.

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, 1411271 + ... + 1431249.

It is an arithmetic number, because the mean of its divisors is an integer number (1252446300).

Almost surely, 2^28395353540 is an apocalyptic number.

28395353540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28395353540 is an abundant number, since it is smaller than the sum of its proper divisors (31722068860).

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

28395353540 is a wasteful number, since it uses less digits than its factorization.

28395353540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20564 (or 20562 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 28395353540 in words is "twenty-eight billion, three hundred ninety-five million, three hundred fifty-three thousand, five hundred forty".