747785280 has 224 divisors, whose sum is σ = 2727106560. Its totient is φ = 171694080.

The previous prime is 747785279. The next prime is 747785303. The reversal of 747785280 is 82587747.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198777 + ... + 202503.

Almost surely, 2^747785280 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 747785280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363553280).

747785280 is an abundant number, since it is smaller than the sum of its proper divisors (1979321280).

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

747785280 is a wasteful number, since it uses less digits than its factorization.

747785280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 48.

The square root of 747785280 is about 27345.6629102313. The cubic root of 747785280 is about 907.6651006069.

The spelling of 747785280 in words is "seven hundred forty-seven million, seven hundred eighty-five thousand, two hundred eighty".