1032872721 has 8 divisors (see below), whose sum is σ = 1387071840. Its totient is φ = 683627712.

The previous prime is 1032872719. The next prime is 1032872747. The reversal of 1032872721 is 1272782301.

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

It is not a de Polignac number, because 1032872721 - 2¹ = 1032872719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1032872221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238040 + ... + 1238873.

It is an arithmetic number, because the mean of its divisors is an integer number (173383980).

Almost surely, 2^1032872721 is an apocalyptic number.

It is an amenable number.

1032872721 is a deficient number, since it is larger than the sum of its proper divisors (354199119).

1032872721 is a wasteful number, since it uses less digits than its factorization.

1032872721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477055.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1032872721 is about 32138.3372469703. The cubic root of 1032872721 is about 1010.8396510851.

The spelling of 1032872721 in words is "one billion, thirty-two million, eight hundred seventy-two thousand, seven hundred twenty-one".