22345442040 has 32 divisors (see below), whose sum is σ = 67036326480. Its totient is φ = 5958784512.

The previous prime is 22345442029. The next prime is 22345442069. The reversal of 22345442040 is 4024454322.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22345441989 and 22345442007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93105889 + ... + 93106128.

Almost surely, 2^22345442040 is an apocalyptic number.

22345442040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22345442040 is an abundant number, since it is smaller than the sum of its proper divisors (44690884440).

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

22345442040 is a wasteful number, since it uses less digits than its factorization.

22345442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186212031 (or 186212027 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 22345442040 its reverse (4024454322), we get a palindrome (26369896362).

The spelling of 22345442040 in words is "twenty-two billion, three hundred forty-five million, four hundred forty-two thousand, forty".