28064472450 has 96 divisors (see below), whose sum is σ = 81392695296. Its totient is φ = 6265546560.

The previous prime is 28064472433. The next prime is 28064472451. The reversal of 28064472450 is 5427446082.

It is a happy number.

It is a super-2 number, since 2×28064472450² (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 not an unprimeable number, because it can be changed into a prime (28064472451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 265642 + ... + 355941.

It is an arithmetic number, because the mean of its divisors is an integer number (847840576).

Almost surely, 2^28064472450 is an apocalyptic number.

28064472450 is an abundant number, since it is smaller than the sum of its proper divisors (53328222846).

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

28064472450 is a wasteful number, since it uses less digits than its factorization.

28064472450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621648 (or 621643 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 28064472450 in words is "twenty-eight billion, sixty-four million, four hundred seventy-two thousand, four hundred fifty".