28831450452 has 288 divisors, whose sum is σ = 84766445568. Its totient is φ = 7585433856.

The previous prime is 28831450433. The next prime is 28831450471. The reversal of 28831450452 is 25405413882.

It is an interprime number because it is at equal distance from previous prime (28831450433) and next prime (28831450471).

It is a super-2 number, since 2×28831450452² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42586738 + ... + 42587414.

It is an arithmetic number, because the mean of its divisors is an integer number (294327936).

Almost surely, 2^28831450452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28831450452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42383222784).

28831450452 is an abundant number, since it is smaller than the sum of its proper divisors (55934995116).

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

28831450452 is a wasteful number, since it uses less digits than its factorization.

28831450452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 28831450452 in words is "twenty-eight billion, eight hundred thirty-one million, four hundred fifty thousand, four hundred fifty-two".