751740720 has 80 divisors (see below), whose sum is σ = 2337683712. Its totient is φ = 199837440.

The previous prime is 751740713. The next prime is 751740727. The reversal of 751740720 is 27047157.

It is a happy number.

751740720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (751740713) and next prime (751740727).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×751740720² = 1130228220212236800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (751740727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74709 + ... + 84171.

Almost surely, 2^751740720 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 751740720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168841856).

751740720 is an abundant number, since it is smaller than the sum of its proper divisors (1585942992).

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

751740720 is a wasteful number, since it uses less digits than its factorization.

751740720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810 (or 9804 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 751740720 is about 27417.8905096654. The cubic root of 751740720 is about 909.2626640088.

Adding to 751740720 its reverse (27047157), we get a palindrome (778787877).

The spelling of 751740720 in words is "seven hundred fifty-one million, seven hundred forty thousand, seven hundred twenty".