726746890 has 16 divisors (see below), whose sum is σ = 1308504960. Its totient is φ = 290618640.

The previous prime is 726746879. The next prime is 726746897. The reversal of 726746890 is 98647627.

It is a super-2 number, since 2×726746890² = 1056322084249344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726746897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39955 + ... + 55225.

It is an arithmetic number, because the mean of its divisors is an integer number (81781560).

Almost surely, 2^726746890 is an apocalyptic number.

726746890 is a deficient number, since it is larger than the sum of its proper divisors (581758070).

726746890 is a wasteful number, since it uses less digits than its factorization.

726746890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 726746890 is about 26958.2434516791. The cubic root of 726746890 is about 899.0718373612.

The spelling of 726746890 in words is "seven hundred twenty-six million, seven hundred forty-six thousand, eight hundred ninety".