22053402 has 48 divisors (see below), whose sum is σ = 54966912. Its totient is φ = 6259680.

The previous prime is 22053401. The next prime is 22053407. The reversal of 22053402 is 20435022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22053401) 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, 22323 + ... + 23289.

It is an arithmetic number, because the mean of its divisors is an integer number (1145144).

Almost surely, 2^22053402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22053402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27483456).

22053402 is an abundant number, since it is smaller than the sum of its proper divisors (32913510).

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

22053402 is a wasteful number, since it uses less digits than its factorization.

22053402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22053402 is about 4696.1049817908. The cubic root of 22053402 is about 280.4304688154.

Adding to 22053402 its reverse (20435022), we get a palindrome (42488424).

The spelling of 22053402 in words is "twenty-two million, fifty-three thousand, four hundred two".