726981642 has 48 divisors (see below), whose sum is σ = 1729570752. Its totient is φ = 228070080.

The previous prime is 726981641. The next prime is 726981649. The reversal of 726981642 is 246189627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (726981641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35734 + ... + 52257.

It is an arithmetic number, because the mean of its divisors is an integer number (36032724).

Almost surely, 2^726981642 is an apocalyptic number.

726981642 is an abundant number, since it is smaller than the sum of its proper divisors (1002589110).

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

726981642 is a wasteful number, since it uses less digits than its factorization.

726981642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88025 (or 88013 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 726981642 is about 26962.5970930102. The cubic root of 726981642 is about 899.1686322672.

The spelling of 726981642 in words is "seven hundred twenty-six million, nine hundred eighty-one thousand, six hundred forty-two".