42861628 has 24 divisors (see below), whose sum is σ = 76207824. Its totient is φ = 21091200.

The previous prime is 42861617. The next prime is 42861647. The reversal of 42861628 is 82616824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82008 + ... + 82528.

It is an arithmetic number, because the mean of its divisors is an integer number (3175326).

Almost surely, 2^42861628 is an apocalyptic number.

It is an amenable number.

42861628 is a deficient number, since it is larger than the sum of its proper divisors (33346196).

42861628 is a wasteful number, since it uses less digits than its factorization.

42861628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 811 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 42861628 is about 6546.8792565619. The cubic root of 42861628 is about 349.9636098220.

The spelling of 42861628 in words is "forty-two million, eight hundred sixty-one thousand, six hundred twenty-eight".