42728662 has 4 divisors (see below), whose sum is σ = 64092996. Its totient is φ = 21364330.

The previous prime is 42728617. The next prime is 42728669. The reversal of 42728662 is 26682724.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42728669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10682164 + ... + 10682167.

It is an arithmetic number, because the mean of its divisors is an integer number (16023249).

Almost surely, 2^42728662 is an apocalyptic number.

42728662 is a deficient number, since it is larger than the sum of its proper divisors (21364334).

42728662 is a wasteful number, since it uses less digits than its factorization.

42728662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21364333.

The product of its digits is 64512, while the sum is 37.

The square root of 42728662 is about 6536.7164540004. The cubic root of 42728662 is about 349.6013474648.

The spelling of 42728662 in words is "forty-two million, seven hundred twenty-eight thousand, six hundred sixty-two".