42787448 has 16 divisors (see below), whose sum is σ = 87519960. Its totient is φ = 19448800.

The previous prime is 42787447. The next prime is 42787489. The reversal of 42787448 is 84478724.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 42787399 and 42787408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42787447) 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, 243023 + ... + 243198.

Almost surely, 2^42787448 is an apocalyptic number.

It is an amenable number.

42787448 is an abundant number, since it is smaller than the sum of its proper divisors (44732512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42787448 is a wasteful number, since it uses less digits than its factorization.

42787448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486238 (or 486234 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 42787448 is about 6541.2115085816. The cubic root of 42787448 is about 349.7616009190.

The spelling of 42787448 in words is "forty-two million, seven hundred eighty-seven thousand, four hundred forty-eight".