729226998 has 12 divisors (see below), whose sum is σ = 1579991868. Its totient is φ = 243075660.

The previous prime is 729226997. The next prime is 729227027. The reversal of 729226998 is 899622927.

It is a happy number.

729226998 is a `hidden beast` number, since 7 + 292 + 269 + 98 = 666.

It is a super-2 number, since 2×729226998² = 1063544029224184008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729226997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20256288 + ... + 20256323.

It is an arithmetic number, because the mean of its divisors is an integer number (131665989).

Almost surely, 2^729226998 is an apocalyptic number.

729226998 is an abundant number, since it is smaller than the sum of its proper divisors (850764870).

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

729226998 is a wasteful number, since it uses less digits than its factorization.

729226998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40512619 (or 40512616 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 729226998 is about 27004.2033394803. The cubic root of 729226998 is about 900.0934051206.

The spelling of 729226998 in words is "seven hundred twenty-nine million, two hundred twenty-six thousand, nine hundred ninety-eight".