728787346 has 16 divisors (see below), whose sum is σ = 1250634240. Its totient is φ = 312016320.

The previous prime is 728787317. The next prime is 728787347. The reversal of 728787346 is 643787827.

It is a super-2 number, since 2×728787346² = 1062261991379447432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 728787293 and 728787302.

It is not an unprimeable number, because it can be changed into a prime (728787347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12391 + ... + 40138.

It is an arithmetic number, because the mean of its divisors is an integer number (78164640).

Almost surely, 2^728787346 is an apocalyptic number.

728787346 is a deficient number, since it is larger than the sum of its proper divisors (521846894).

728787346 is a wasteful number, since it uses less digits than its factorization.

728787346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53529.

The product of its digits is 3161088, while the sum is 52.

The square root of 728787346 is about 26996.0616757334. The cubic root of 728787346 is about 899.9124795552.

The spelling of 728787346 in words is "seven hundred twenty-eight million, seven hundred eighty-seven thousand, three hundred forty-six".