42887428 has 24 divisors (see below), whose sum is σ = 76769280. Its totient is φ = 20959200.

The previous prime is 42887401. The next prime is 42887431. The reversal of 42887428 is 82478824.

It is a super-3 number, since 3×42887428³ (a number of 24 digits) contains 333 as substring.

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, 32893 + ... + 34171.

It is an arithmetic number, because the mean of its divisors is an integer number (3198720).

Almost surely, 2^42887428 is an apocalyptic number.

It is an amenable number.

42887428 is a deficient number, since it is larger than the sum of its proper divisors (33881852).

42887428 is a wasteful number, since it uses less digits than its factorization.

42887428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467 (or 1465 counting only the distinct ones).

The product of its digits is 229376, while the sum is 43.

The square root of 42887428 is about 6548.8493645831. The cubic root of 42887428 is about 350.0338144201.

The spelling of 42887428 in words is "forty-two million, eight hundred eighty-seven thousand, four hundred twenty-eight".