721372098 has 32 divisors (see below), whose sum is σ = 1460721600. Its totient is φ = 237473600.

The previous prime is 721372097. The next prime is 721372111. The reversal of 721372098 is 890273127.

It is not an unprimeable number, because it can be changed into a prime (721372097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281728 + ... + 284276.

It is an arithmetic number, because the mean of its divisors is an integer number (45647550).

Almost surely, 2^721372098 is an apocalyptic number.

721372098 is an abundant number, since it is smaller than the sum of its proper divisors (739349502).

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

721372098 is a wasteful number, since it uses less digits than its factorization.

721372098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 721372098 is about 26858.3710972948. The cubic root of 721372098 is about 896.8499330738.

The spelling of 721372098 in words is "seven hundred twenty-one million, three hundred seventy-two thousand, ninety-eight".