22373428 has 48 divisors (see below), whose sum is σ = 51698304. Its totient is φ = 8202240.

The previous prime is 22373423. The next prime is 22373437. The reversal of 22373428 is 82437322.

It is a self number, because there is not a number n which added to its sum of digits gives 22373428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22373423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3100 + ... + 7372.

It is an arithmetic number, because the mean of its divisors is an integer number (1077048).

Almost surely, 2^22373428 is an apocalyptic number.

22373428 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 22373428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25849152).

22373428 is an abundant number, since it is smaller than the sum of its proper divisors (29324876).

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

22373428 is a wasteful number, since it uses less digits than its factorization.

22373428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312 (or 4310 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 22373428 is about 4730.0558136242. The cubic root of 22373428 is about 281.7804404036.

It can be divided in two parts, 22373 and 428, that added together give a square (22801 = 151²).

The spelling of 22373428 in words is "twenty-two million, three hundred seventy-three thousand, four hundred twenty-eight".