27623802440 has 64 divisors (see below), whose sum is σ = 67877429760. Its totient is φ = 10055888640.

The previous prime is 27623802421. The next prime is 27623802449. The reversal of 27623802440 is 4420832672.

It is a super-2 number, since 2×27623802440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27623802394 and 27623802403.

It is not an unprimeable number, because it can be changed into a prime (27623802449) 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, 337184 + ... + 411023.

It is an arithmetic number, because the mean of its divisors is an integer number (1060584840).

Almost surely, 2^27623802440 is an apocalyptic number.

27623802440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27623802440 is an abundant number, since it is smaller than the sum of its proper divisors (40253627320).

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

27623802440 is a wasteful number, since it uses less digits than its factorization.

27623802440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748302 (or 748298 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 27623802440 in words is "twenty-seven billion, six hundred twenty-three million, eight hundred two thousand, four hundred forty".