22740402740 has 48 divisors (see below), whose sum is σ = 52280424000. Its totient is φ = 8239994880.

The previous prime is 22740402739. The next prime is 22740402743. The reversal of 22740402740 is 4720404722.

It is a junction number, because it is equal to n+sod(n) for n = 22740402697 and 22740402706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22740402743) 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, 120365 + ... + 244884.

It is an arithmetic number, because the mean of its divisors is an integer number (1089175500).

Almost surely, 2^22740402740 is an apocalyptic number.

22740402740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22740402740 is an abundant number, since it is smaller than the sum of its proper divisors (29540021260).

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

22740402740 is a wasteful number, since it uses less digits than its factorization.

22740402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365552 (or 365550 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 32.

The spelling of 22740402740 in words is "twenty-two billion, seven hundred forty million, four hundred two thousand, seven hundred forty".