42226628 has 12 divisors (see below), whose sum is σ = 74030460. Its totient is φ = 21075072.

The previous prime is 42226627. The next prime is 42226649. The reversal of 42226628 is 82662224.

It can be written as a sum of positive squares in 2 ways, for example, as 4674244 + 37552384 = 2162^2 + 6128^2 .

It is a super-2 number, since 2×42226628² = 3566176224500768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42226594 and 42226603.

It is not an unprimeable number, because it can be changed into a prime (42226627) 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, 7001 + ... + 11552.

It is an arithmetic number, because the mean of its divisors is an integer number (6169205).

Almost surely, 2^42226628 is an apocalyptic number.

It is an amenable number.

42226628 is a deficient number, since it is larger than the sum of its proper divisors (31803832).

42226628 is a wasteful number, since it uses less digits than its factorization.

42226628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19126 (or 19124 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 42226628 is about 6498.2019051427. The cubic root of 42226628 is about 348.2267536134.

The spelling of 42226628 in words is "forty-two million, two hundred twenty-six thousand, six hundred twenty-eight".