28373253480 has 768 divisors, whose sum is σ = 113926176000. Its totient is φ = 6260613120.

The previous prime is 28373253457. The next prime is 28373253529. The reversal of 28373253480 is 8435237382.

28373253480 is a `hidden beast` number, since 2 + 8 + 3 + 7 + 32 + 534 + 80 = 666.

It is a super-2 number, since 2×28373253480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 190424446 + ... + 190424594.

It is an arithmetic number, because the mean of its divisors is an integer number (148341375).

Almost surely, 2^28373253480 is an apocalyptic number.

28373253480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28373253480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56963088000).

28373253480 is an abundant number, since it is smaller than the sum of its proper divisors (85552922520).

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

28373253480 is a wasteful number, since it uses less digits than its factorization.

28373253480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 28373253480 in words is "twenty-eight billion, three hundred seventy-three million, two hundred fifty-three thousand, four hundred eighty".