749761920 has 224 divisors, whose sum is σ = 2689042320. Its totient is φ = 199812096.

The previous prime is 749761799. The next prime is 749761921. The reversal of 749761920 is 29167947.

749761920 is a `hidden beast` number, since 7 + 4 + 9 + 7 + 619 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749761921) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 465757 + ... + 467363.

Almost surely, 2^749761920 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 749761920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344521160).

749761920 is an abundant number, since it is smaller than the sum of its proper divisors (1939280400).

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

749761920 is an equidigital number, since it uses as much as digits as its factorization.

749761920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 749761920 is about 27381.7808040310. The cubic root of 749761920 is about 908.4641484481.

The spelling of 749761920 in words is "seven hundred forty-nine million, seven hundred sixty-one thousand, nine hundred twenty".