28029313 has 16 divisors (see below), whose sum is σ = 32643520. Its totient is φ = 23841216.

The previous prime is 28029289. The next prime is 28029347. The reversal of 28029313 is 31392082.

It is a cyclic number.

It is not a de Polignac number, because 28029313 - 2¹³ = 28021121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28029373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606 + ... + 10672.

It is an arithmetic number, because the mean of its divisors is an integer number (2040220).

Almost surely, 2^28029313 is an apocalyptic number.

It is an amenable number.

28029313 is a deficient number, since it is larger than the sum of its proper divisors (4614207).

28029313 is a wasteful number, since it uses less digits than its factorization.

28029313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 28029313 is about 5294.2717157320. The cubic root of 28029313 is about 303.7648263408.

The spelling of 28029313 in words is "twenty-eight million, twenty-nine thousand, three hundred thirteen".