28440630092 has 48 divisors (see below), whose sum is σ = 60064247040. Its totient is φ = 11510828352.

The previous prime is 28440630041. The next prime is 28440630109. The reversal of 28440630092 is 29003604482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84323 + ... + 252965.

It is an arithmetic number, because the mean of its divisors is an integer number (1251338480).

Almost surely, 2^28440630092 is an apocalyptic number.

It is a pronic number, being equal to 168643×168644.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28440630092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30032123520).

28440630092 is an abundant number, since it is smaller than the sum of its proper divisors (31623616948).

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

28440630092 is a wasteful number, since it uses less digits than its factorization.

28440630092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168990 (or 168988 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 28440630092 in words is "twenty-eight billion, four hundred forty million, six hundred thirty thousand, ninety-two".