747122940 has 384 divisors, whose sum is σ = 2644992000. Its totient is φ = 176359680.

The previous prime is 747122903. The next prime is 747122977. The reversal of 747122940 is 49221747.

It is an interprime number because it is at equal distance from previous prime (747122903) and next prime (747122977).

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 = 747122895 and 747122904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24100725 + ... + 24100755.

It is an arithmetic number, because the mean of its divisors is an integer number (6888000).

Almost surely, 2^747122940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747122940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322496000).

747122940 is an abundant number, since it is smaller than the sum of its proper divisors (1897869060).

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

747122940 is a wasteful number, since it uses less digits than its factorization.

747122940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 747122940 is about 27333.5497145907. The cubic root of 747122940 is about 907.3970377005.

The spelling of 747122940 in words is "seven hundred forty-seven million, one hundred twenty-two thousand, nine hundred forty".