926728213 has 4 divisors (see below), whose sum is σ = 967020768. Its totient is φ = 886435660.

The previous prime is 926728193. The next prime is 926728273. The reversal of 926728213 is 312827629.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312827629 = 47 ⋅6655907.

It is a cyclic number.

It is not a de Polignac number, because 926728213 - 2²¹ = 924631061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (926728273) 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, 20146243 + ... + 20146288.

It is an arithmetic number, because the mean of its divisors is an integer number (241755192).

Almost surely, 2^926728213 is an apocalyptic number.

It is an amenable number.

926728213 is a deficient number, since it is larger than the sum of its proper divisors (40292555).

926728213 is a wasteful number, since it uses less digits than its factorization.

926728213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40292554.

The product of its digits is 72576, while the sum is 40.

The square root of 926728213 is about 30442.2110399360. The cubic root of 926728213 is about 974.9540063336.

The spelling of 926728213 in words is "nine hundred twenty-six million, seven hundred twenty-eight thousand, two hundred thirteen".