28197333351 has 24 divisors (see below), whose sum is σ = 44574166416. Its totient is φ = 17034675840.

The previous prime is 28197333349. The next prime is 28197333371. The reversal of 28197333351 is 15333379182.

28197333351 is a `hidden beast` number, since 281 + 9 + 7 + 33 + 335 + 1 = 666.

It is not a de Polignac number, because 28197333351 - 2¹ = 28197333349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28197333297 and 28197333306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28197333301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424000 + ... + 485973.

It is an arithmetic number, because the mean of its divisors is an integer number (1857256934).

Almost surely, 2^28197333351 is an apocalyptic number.

28197333351 is a deficient number, since it is larger than the sum of its proper divisors (16376833065).

28197333351 is a wasteful number, since it uses less digits than its factorization.

28197333351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910303 (or 910300 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 28197333351 in words is "twenty-eight billion, one hundred ninety-seven million, three hundred thirty-three thousand, three hundred fifty-one".