928051213 has 4 divisors (see below), whose sum is σ = 928345600. Its totient is φ = 927756828.

The previous prime is 928051211. The next prime is 928051261. The reversal of 928051213 is 312150829.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 928051213 - 2¹ = 928051211 is a prime.

It is a super-2 number, since 2×928051213² = 1722558107901542738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (928051211) 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, 142413 + ... + 148786.

It is an arithmetic number, because the mean of its divisors is an integer number (232086400).

Almost surely, 2^928051213 is an apocalyptic number.

It is an amenable number.

928051213 is a deficient number, since it is larger than the sum of its proper divisors (294387).

928051213 is a wasteful number, since it uses less digits than its factorization.

928051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294386.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 928051213 is about 30463.9329864021. The cubic root of 928051213 is about 975.4177348263.

The spelling of 928051213 in words is "nine hundred twenty-eight million, fifty-one thousand, two hundred thirteen".