726884820 has 48 divisors (see below), whose sum is σ = 2261421120. Its totient is φ = 193835808.

The previous prime is 726884813. The next prime is 726884831. The reversal of 726884820 is 28488627.

It is a happy number.

726884820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672502 + ... + 673581.

It is an arithmetic number, because the mean of its divisors is an integer number (47112940).

Almost surely, 2^726884820 is an apocalyptic number.

It is an amenable number.

726884820 is an abundant number, since it is smaller than the sum of its proper divisors (1534536300).

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

726884820 is a wasteful number, since it uses less digits than its factorization.

726884820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346101 (or 1346093 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 726884820 is about 26960.8015459481. The cubic root of 726884820 is about 899.1287123364.

The spelling of 726884820 in words is "seven hundred twenty-six million, eight hundred eighty-four thousand, eight hundred twenty".