747277440 has 576 divisors, whose sum is σ = 3064210560. Its totient is φ = 154312704.

The previous prime is 747277411. The next prime is 747277441. The reversal of 747277440 is 44772747.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 747277392 and 747277401.

It is not an unprimeable number, because it can be changed into a prime (747277441) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15899497 + ... + 15899543.

It is an arithmetic number, because the mean of its divisors is an integer number (5319810).

Almost surely, 2^747277440 is an apocalyptic number.

747277440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747277440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532105280).

747277440 is an abundant number, since it is smaller than the sum of its proper divisors (2316933120).

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

747277440 is a wasteful number, since it uses less digits than its factorization.

747277440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 42.

The square root of 747277440 is about 27336.3757656351. The cubic root of 747277440 is about 907.4595812581.

The spelling of 747277440 in words is "seven hundred forty-seven million, two hundred seventy-seven thousand, four hundred forty".