200728749 has 32 divisors (see below), whose sum is σ = 313891200. Its totient is φ = 112976640.

The previous prime is 200728729. The next prime is 200728771. The reversal of 200728749 is 947827002.

It is not a de Polignac number, because 200728749 - 2⁷ = 200728621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200728709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16819 + ... + 26159.

It is an arithmetic number, because the mean of its divisors is an integer number (9809100).

Almost surely, 2^200728749 is an apocalyptic number.

200728749 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

200728749 is a deficient number, since it is larger than the sum of its proper divisors (113162451).

200728749 is a wasteful number, since it uses less digits than its factorization.

200728749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9405.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 200728749 is about 14167.8773639526. The cubic root of 200728749 is about 585.5129783451.

The spelling of 200728749 in words is "two hundred million, seven hundred twenty-eight thousand, seven hundred forty-nine".