28147225392 has 480 divisors, whose sum is σ = 95673876480. Its totient is φ = 7611770880.

The previous prime is 28147225373. The next prime is 28147225409. The reversal of 28147225392 is 29352274182.

28147225392 is a `hidden beast` number, since 28 + 14 + 7 + 225 + 392 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (483840) is a multiple of the sum of its prime divisors (432).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 122913534 + ... + 122913762.

It is an arithmetic number, because the mean of its divisors is an integer number (199320576).

Almost surely, 2^28147225392 is an apocalyptic number.

28147225392 is a gapful number since it is divisible by the number (22) 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 28147225392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47836938240).

28147225392 is an abundant number, since it is smaller than the sum of its proper divisors (67526651088).

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

28147225392 is a wasteful number, since it uses less digits than its factorization.

28147225392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 432 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 28147225392 in words is "twenty-eight billion, one hundred forty-seven million, two hundred twenty-five thousand, three hundred ninety-two".