28492299072 has 224 divisors, whose sum is σ = 88582195200. Its totient is φ = 8955588096.

The previous prime is 28492299067. The next prime is 28492299079. The reversal of 28492299072 is 27099229482.

28492299072 is a `hidden beast` number, since 284 + 9 + 2 + 299 + 0 + 72 = 666.

It is a super-2 number, since 2×28492299072² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28492299079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7450953 + ... + 7454775.

Almost surely, 2^28492299072 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 28492299072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44291097600).

28492299072 is an abundant number, since it is smaller than the sum of its proper divisors (60089896128).

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

28492299072 is a wasteful number, since it uses less digits than its factorization.

28492299072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 28492299072 in words is "twenty-eight billion, four hundred ninety-two million, two hundred ninety-nine thousand, seventy-two".