28874457402 has 16 divisors (see below), whose sum is σ = 65998759872. Its totient is φ = 8249844960.

The previous prime is 28874457401. The next prime is 28874457461. The reversal of 28874457402 is 20475447882.

It is not an unprimeable number, because it can be changed into a prime (28874457401) 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, 343743499 + ... + 343743582.

It is an arithmetic number, because the mean of its divisors is an integer number (4124922492).

Almost surely, 2^28874457402 is an apocalyptic number.

28874457402 is an abundant number, since it is smaller than the sum of its proper divisors (37124302470).

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

28874457402 is a wasteful number, since it uses less digits than its factorization.

28874457402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687487093.

The product of its (nonzero) digits is 4014080, while the sum is 51.

The spelling of 28874457402 in words is "twenty-eight billion, eight hundred seventy-four million, four hundred fifty-seven thousand, four hundred two".