744520 has 32 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 255168.

The previous prime is 744511. The next prime is 744539. The reversal of 744520 is 25447.

It is a junction number, because it is equal to n+sod(n) for n = 744491 and 744500.

It is an unprimeable number.

744520 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2⁷⁴⁴⁵²⁰ is an apocalyptic number.

744520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

744520 is an abundant number, since it is smaller than the sum of its proper divisors (1170680).

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

744520 is a wasteful number, since it uses less digits than its factorization.

744520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 744520 is about 862.8557237453. The cubic root of 744520 is about 90.6342035837.

Adding to 744520 its reverse (25447), we get a palindrome (769967).

The spelling of 744520 in words is "seven hundred forty-four thousand, five hundred twenty".