728029551 has 8 divisors (see below), whose sum is σ = 970996144. Its totient is φ = 485208000.

The previous prime is 728029537. The next prime is 728029609. The reversal of 728029551 is 155920827.

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

It is not a de Polignac number, because 728029551 - 2¹⁵ = 727996783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728029531) 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, 23950 + ... + 45051.

It is an arithmetic number, because the mean of its divisors is an integer number (121374518).

Almost surely, 2^728029551 is an apocalyptic number.

728029551 is a deficient number, since it is larger than the sum of its proper divisors (242966593).

728029551 is a wasteful number, since it uses less digits than its factorization.

728029551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72521.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 728029551 is about 26982.0227373709. The cubic root of 728029551 is about 899.6004609296.

The spelling of 728029551 in words is "seven hundred twenty-eight million, twenty-nine thousand, five hundred fifty-one".