728672245 has 16 divisors (see below), whose sum is σ = 1009628928. Its totient is φ = 494507520.

The previous prime is 728672239. The next prime is 728672257. The reversal of 728672245 is 542276827.

It is not a de Polignac number, because 728672245 - 2¹⁹ = 728147957 is a prime.

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, 103921 + ... + 110710.

It is an arithmetic number, because the mean of its divisors is an integer number (63101808).

Almost surely, 2^728672245 is an apocalyptic number.

It is an amenable number.

728672245 is a deficient number, since it is larger than the sum of its proper divisors (280956683).

728672245 is a wasteful number, since it uses less digits than its factorization.

728672245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214740.

The product of its digits is 376320, while the sum is 43.

The square root of 728672245 is about 26993.9297806007. The cubic root of 728672245 is about 899.8651011805.

The spelling of 728672245 in words is "seven hundred twenty-eight million, six hundred seventy-two thousand, two hundred forty-five".