30744423540 has 72 divisors (see below), whose sum is σ = 94219561800. Its totient is φ = 8113987584.

The previous prime is 30744423497. The next prime is 30744423553. The reversal of 30744423540 is 4532444703.

30744423540 is a `hidden beast` number, since 3 + 0 + 74 + 4 + 42 + 3 + 540 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1384286436 + 29360137104 = 37206^2 + 171348^2 .

It is a super-2 number, since 2×30744423540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30744423495 and 30744423504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862965 + ... + 897884.

It is an arithmetic number, because the mean of its divisors is an integer number (1308605025).

Almost surely, 2^30744423540 is an apocalyptic number.

30744423540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30744423540 is an abundant number, since it is smaller than the sum of its proper divisors (63475138260).

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

30744423540 is a wasteful number, since it uses less digits than its factorization.

30744423540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760961 (or 1760956 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 36.

The spelling of 30744423540 in words is "thirty billion, seven hundred forty-four million, four hundred twenty-three thousand, five hundred forty".