28353280157 has 8 divisors (see below), whose sum is σ = 29854632960. Its totient is φ = 26852834880.

The previous prime is 28353280147. The next prime is 28353280169. The reversal of 28353280157 is 75108235382.

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

It is a cyclic number.

It is not a de Polignac number, because 28353280157 - 2⁶ = 28353280093 is a prime.

It is a super-2 number, since 2×28353280157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28353280147) 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, 162269 + ... + 288162.

It is an arithmetic number, because the mean of its divisors is an integer number (3731829120).

Almost surely, 2^28353280157 is an apocalyptic number.

It is an amenable number.

28353280157 is a deficient number, since it is larger than the sum of its proper divisors (1501352803).

28353280157 is a wasteful number, since it uses less digits than its factorization.

28353280157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453763.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 28353280157 in words is "twenty-eight billion, three hundred fifty-three million, two hundred eighty thousand, one hundred fifty-seven".