724916990 has 32 divisors (see below), whose sum is σ = 1556098560. Its totient is φ = 237736224.

The previous prime is 724916971. The next prime is 724916999. The reversal of 724916990 is 99619427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724916999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223520 + ... + 226739.

It is an arithmetic number, because the mean of its divisors is an integer number (48628080).

Almost surely, 2^724916990 is an apocalyptic number.

724916990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

724916990 is an abundant number, since it is smaller than the sum of its proper divisors (831181570).

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

724916990 is a wasteful number, since it uses less digits than its factorization.

724916990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450296.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 724916990 is about 26924.2825345449. The cubic root of 724916990 is about 898.3166022365.

The spelling of 724916990 in words is "seven hundred twenty-four million, nine hundred sixteen thousand, nine hundred ninety".