42628311 has 12 divisors (see below), whose sum is σ = 67172040. Its totient is φ = 25835280.

The previous prime is 42628307. The next prime is 42628319. The reversal of 42628311 is 11382624.

42628311 is a `hidden beast` number, since 4 + 2 + 628 + 31 + 1 = 666.

It is not a de Polignac number, because 42628311 - 2² = 42628307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42628319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215196 + ... + 215393.

It is an arithmetic number, because the mean of its divisors is an integer number (5597670).

Almost surely, 2^42628311 is an apocalyptic number.

42628311 is a deficient number, since it is larger than the sum of its proper divisors (24543729).

42628311 is a wasteful number, since it uses less digits than its factorization.

42628311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430606 (or 430603 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 42628311 is about 6529.0359931616. The cubic root of 42628311 is about 349.3274458740.

The spelling of 42628311 in words is "forty-two million, six hundred twenty-eight thousand, three hundred eleven".