22103928 has 160 divisors (see below), whose sum is σ = 77362560. Its totient is φ = 5728320.

The previous prime is 22103909. The next prime is 22103947. The reversal of 22103928 is 82930122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22103909) and next prime (22103947).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 49675 + ... + 50117.

It is an arithmetic number, because the mean of its divisors is an integer number (483516).

Almost surely, 2^22103928 is an apocalyptic number.

22103928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22103928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38681280).

22103928 is an abundant number, since it is smaller than the sum of its proper divisors (55258632).

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

22103928 is a wasteful number, since it uses less digits than its factorization.

22103928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22103928 is about 4701.4814686437. The cubic root of 22103928 is about 280.6444678898.

The spelling of 22103928 in words is "twenty-two million, one hundred three thousand, nine hundred twenty-eight".