22405012340 has 48 divisors (see below), whose sum is σ = 47591276544. Its totient is φ = 8859513600.

The previous prime is 22405012339. The next prime is 22405012349. The reversal of 22405012340 is 4321050422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405012349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698045 + ... + 729435.

It is an arithmetic number, because the mean of its divisors is an integer number (991484928).

Almost surely, 2^22405012340 is an apocalyptic number.

22405012340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22405012340 is an abundant number, since it is smaller than the sum of its proper divisors (25186264204).

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

22405012340 is a wasteful number, since it uses less digits than its factorization.

22405012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31808 (or 31806 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22405012340 its reverse (4321050422), we get a palindrome (26726062762).

The spelling of 22405012340 in words is "twenty-two billion, four hundred five million, twelve thousand, three hundred forty".