28252023023728 has 40 divisors (see below), whose sum is σ = 62576664742880. Its totient is φ = 12104407203840.

The previous prime is 28252023023723. The next prime is 28252023023759. The reversal of 28252023023728 is 82732032025282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28252023023723) 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, 37149633 + ... + 37902496.

It is an arithmetic number, because the mean of its divisors is an integer number (1564416618572).

Almost surely, 2^{28252023023728} is an apocalyptic number.

28252023023728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28252023023728 is an abundant number, since it is smaller than the sum of its proper divisors (34324641719152).

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

28252023023728 is a wasteful number, since it uses less digits than its factorization.

28252023023728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75055505 (or 75055499 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 28252023023728 in words is "twenty-eight trillion, two hundred fifty-two billion, twenty-three million, twenty-three thousand, seven hundred twenty-eight".