28195077504 has 64 divisors (see below), whose sum is σ = 81701657280. Its totient is φ = 8543961600.

The previous prime is 28195077503. The next prime is 28195077509. The reversal of 28195077504 is 40577059182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28195077503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3333262 + ... + 3341709.

It is an arithmetic number, because the mean of its divisors is an integer number (1276588395).

Almost surely, 2^28195077504 is an apocalyptic number.

28195077504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28195077504 is an abundant number, since it is smaller than the sum of its proper divisors (53506579776).

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

28195077504 is a wasteful number, since it uses less digits than its factorization.

28195077504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674999 (or 6674987 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 28195077504 in words is "twenty-eight billion, one hundred ninety-five million, seventy-seven thousand, five hundred four".