10028731 has 4 divisors (see below), whose sum is σ = 10035352. Its totient is φ = 10022112.

The previous prime is 10028677. The next prime is 10028737. The reversal of 10028731 is 13782001.

10028731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10028731 - 2¹¹ = 10026683 is a prime.

It is a super-2 number, since 2×10028731² = 201150890940722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10028737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211 + ... + 4483.

It is an arithmetic number, because the mean of its divisors is an integer number (2508838).

Almost surely, 2^10028731 is an apocalyptic number.

10028731 is a deficient number, since it is larger than the sum of its proper divisors (6621).

10028731 is an equidigital number, since it uses as much as digits as its factorization.

10028731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 10028731 is about 3166.8171718620. The cubic root of 10028731 is about 215.6496019258.

The spelling of 10028731 in words is "ten million, twenty-eight thousand, seven hundred thirty-one".