10228761844 has 24 divisors (see below), whose sum is σ = 20459755008. Its totient is φ = 4383276960.

The previous prime is 10228761821. The next prime is 10228761847. The reversal of 10228761844 is 44816782201.

It is a super-2 number, since 2×10228761844² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10228761844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10228761847) 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, 387714 + ... + 413254.

It is an arithmetic number, because the mean of its divisors is an integer number (852489792).

Almost surely, 2^10228761844 is an apocalyptic number.

10228761844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10228761844 is an abundant number, since it is smaller than the sum of its proper divisors (10230993164).

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

10228761844 is a wasteful number, since it uses less digits than its factorization.

10228761844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39855 (or 39853 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 10228761844 in words is "ten billion, two hundred twenty-eight million, seven hundred sixty-one thousand, eight hundred forty-four".