747525240 has 512 divisors, whose sum is σ = 3172608000. Its totient is φ = 152064000.

The previous prime is 747525239. The next prime is 747525253. The reversal of 747525240 is 42525747.

It is a happy number.

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 = 747525195 and 747525204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7401190 + ... + 7401290.

It is an arithmetic number, because the mean of its divisors is an integer number (6196500).

Almost surely, 2^747525240 is an apocalyptic number.

747525240 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 747525240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586304000).

747525240 is an abundant number, since it is smaller than the sum of its proper divisors (2425082760).

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

747525240 is a wasteful number, since it uses less digits than its factorization.

747525240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 747525240 is about 27340.9078122874. The cubic root of 747525240 is about 907.5598758390.

The spelling of 747525240 in words is "seven hundred forty-seven million, five hundred twenty-five thousand, two hundred forty".