28373213952 has 270 divisors, whose sum is σ = 87675616028. Its totient is φ = 9125996544.

The previous prime is 28373213951. The next prime is 28373213959. The reversal of 28373213952 is 25931237382.

28373213952 is a `hidden beast` number, since 283 + 73 + 213 + 95 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28373213898 and 28373213907.

It is not an unprimeable number, because it can be changed into a prime (28373213951) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 17438163 + ... + 17439789.

Almost surely, 2^28373213952 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 28373213952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43837808014).

28373213952 is an abundant number, since it is smaller than the sum of its proper divisors (59302402076).

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

28373213952 is an equidigital number, since it uses as much as digits as its factorization.

28373213952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1661 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 28373213952 in words is "twenty-eight billion, three hundred seventy-three million, two hundred thirteen thousand, nine hundred fifty-two".