28762471122 has 128 divisors (see below), whose sum is σ = 76396400640. Its totient is φ = 6988892160.

The previous prime is 28762471109. The next prime is 28762471141. The reversal of 28762471122 is 22117426782.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1300654 + ... + 1322582.

It is an arithmetic number, because the mean of its divisors is an integer number (596846880).

Almost surely, 2^28762471122 is an apocalyptic number.

28762471122 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 28762471122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38198200320).

28762471122 is an abundant number, since it is smaller than the sum of its proper divisors (47633929518).

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

28762471122 is a wasteful number, since it uses less digits than its factorization.

28762471122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22136.

The product of its digits is 150528, while the sum is 42.

The spelling of 28762471122 in words is "twenty-eight billion, seven hundred sixty-two million, four hundred seventy-one thousand, one hundred twenty-two".