28156453241 has 8 divisors (see below), whose sum is σ = 32182152960. Its totient is φ = 24131590848.

The previous prime is 28156453217. The next prime is 28156453271. The reversal of 28156453241 is 14235465182.

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 28156453241 - 2²⁶ = 28089344377 is a prime.

It is a super-2 number, since 2×28156453241² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28156453211) 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, 135536 + ... + 273281.

It is an arithmetic number, because the mean of its divisors is an integer number (4022769120).

Almost surely, 2^28156453241 is an apocalyptic number.

It is an amenable number.

28156453241 is a deficient number, since it is larger than the sum of its proper divisors (4025699719).

28156453241 is an equidigital number, since it uses as much as digits as its factorization.

28156453241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418663.

The product of its digits is 230400, while the sum is 41.

The spelling of 28156453241 in words is "twenty-eight billion, one hundred fifty-six million, four hundred fifty-three thousand, two hundred forty-one".