28890051762 has 64 divisors (see below), whose sum is σ = 67967061120. Its totient is φ = 8070950400.

The previous prime is 28890051739. The next prime is 28890051763. The reversal of 28890051762 is 26715009882.

It is a super-2 number, since 2×28890051762² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28890051763) 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, 673312 + ... + 714932.

It is an arithmetic number, because the mean of its divisors is an integer number (1061985330).

Almost surely, 2^28890051762 is an apocalyptic number.

28890051762 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28890051762, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33983530560).

28890051762 is an abundant number, since it is smaller than the sum of its proper divisors (39077009358).

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

28890051762 is a wasteful number, since it uses less digits than its factorization.

28890051762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42459.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 28890051762 in words is "twenty-eight billion, eight hundred ninety million, fifty-one thousand, seven hundred sixty-two".