28398476157 has 8 divisors (see below), whose sum is σ = 37865417184. Its totient is φ = 18931926288.

The previous prime is 28398476147. The next prime is 28398476203. The reversal of 28398476157 is 75167489382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28398476157 - 2²³ = 28390087549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28398476157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28398476147) 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, 210118 + ... + 317720.

It is an arithmetic number, because the mean of its divisors is an integer number (4733177148).

Almost surely, 2^28398476157 is an apocalyptic number.

It is an amenable number.

28398476157 is a deficient number, since it is larger than the sum of its proper divisors (9466941027).

28398476157 is a wasteful number, since it uses less digits than its factorization.

28398476157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195579.

The product of its digits is 20321280, while the sum is 60.

The spelling of 28398476157 in words is "twenty-eight billion, three hundred ninety-eight million, four hundred seventy-six thousand, one hundred fifty-seven".