728461623 has 8 divisors (see below), whose sum is σ = 972486000. Its totient is φ = 485039168.

The previous prime is 728461583. The next prime is 728461651. The reversal of 728461623 is 326164827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728461623 - 2²² = 724267319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728461663) 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, 147648 + ... + 152501.

It is an arithmetic number, because the mean of its divisors is an integer number (121560750).

Almost surely, 2^728461623 is an apocalyptic number.

728461623 is a deficient number, since it is larger than the sum of its proper divisors (244024377).

728461623 is a wasteful number, since it uses less digits than its factorization.

728461623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300961.

The product of its digits is 96768, while the sum is 39.

The square root of 728461623 is about 26990.0282141386. The cubic root of 728461623 is about 899.7783911163.

The spelling of 728461623 in words is "seven hundred twenty-eight million, four hundred sixty-one thousand, six hundred twenty-three".