42445628 has 12 divisors (see below), whose sum is σ = 74417112. Its totient is φ = 21183600.

The previous prime is 42445621. The next prime is 42445657. The reversal of 42445628 is 82654424.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42445621) 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, 7298 + ... + 11753.

It is an arithmetic number, because the mean of its divisors is an integer number (6201426).

Almost surely, 2^42445628 is an apocalyptic number.

It is an amenable number.

42445628 is a deficient number, since it is larger than the sum of its proper divisors (31971484).

42445628 is a wasteful number, since it uses less digits than its factorization.

42445628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19612 (or 19610 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

The square root of 42445628 is about 6515.0309285528. The cubic root of 42445628 is about 348.8277187908.

The spelling of 42445628 in words is "forty-two million, four hundred forty-five thousand, six hundred twenty-eight".