28372747455 has 48 divisors (see below), whose sum is σ = 53043550560. Its totient is φ = 13946736384.

The previous prime is 28372747453. The next prime is 28372747457. The reversal of 28372747455 is 55474727382.

It is a happy number.

28372747455 is a `hidden beast` number, since 2 + 83 + 72 + 7 + 47 + 455 = 666.

It is an interprime number because it is at equal distance from previous prime (28372747453) and next prime (28372747457).

It is not a de Polignac number, because 28372747455 - 2¹ = 28372747453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28372747453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 348717 + ... + 422313.

It is an arithmetic number, because the mean of its divisors is an integer number (1105073970).

Almost surely, 2^28372747455 is an apocalyptic number.

28372747455 is a deficient number, since it is larger than the sum of its proper divisors (24670803105).

28372747455 is a wasteful number, since it uses less digits than its factorization.

28372747455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74280 (or 74277 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 54.

The spelling of 28372747455 in words is "twenty-eight billion, three hundred seventy-two million, seven hundred forty-seven thousand, four hundred fifty-five".