28154542374 has 96 divisors (see below), whose sum is σ = 72900172800. Its totient is φ = 7678224576.

The previous prime is 28154542343. The next prime is 28154542379. The reversal of 28154542374 is 47324545182.

28154542374 is a `hidden beast` number, since 2 + 8 + 154 + 5 + 423 + 74 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28154542379) 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, 1401352 + ... + 1421300.

It is an arithmetic number, because the mean of its divisors is an integer number (759376800).

Almost surely, 2^28154542374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28154542374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36450086400).

28154542374 is an abundant number, since it is smaller than the sum of its proper divisors (44745630426).

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

28154542374 is a wasteful number, since it uses less digits than its factorization.

28154542374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20474 (or 20471 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The spelling of 28154542374 in words is "twenty-eight billion, one hundred fifty-four million, five hundred forty-two thousand, three hundred seventy-four".