22733401428 has 72 divisors (see below), whose sum is σ = 60588309600. Its totient is φ = 7167237696.

The previous prime is 22733401423. The next prime is 22733401501. The reversal of 22733401428 is 82410433722.

It is a happy number.

22733401428 is a `hidden beast` number, since 2 + 273 + 340 + 1 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22733401392 and 22733401401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22733401421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396550 + ... + 450242.

It is an arithmetic number, because the mean of its divisors is an integer number (841504300).

Almost surely, 2^22733401428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22733401428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30294154800).

22733401428 is an abundant number, since it is smaller than the sum of its proper divisors (37854908172).

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

22733401428 is a wasteful number, since it uses less digits than its factorization.

22733401428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54341 (or 54336 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 22733401428 in words is "twenty-two billion, seven hundred thirty-three million, four hundred one thousand, four hundred twenty-eight".