42787648 has 28 divisors (see below), whose sum is σ = 85254592. Its totient is φ = 21306240.

The previous prime is 42787643. The next prime is 42787687. The reversal of 42787648 is 84678724.

It is a junction number, because it is equal to n+sod(n) for n = 42787598 and 42787607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42787643) 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, 16111 + ... + 18577.

Almost surely, 2^42787648 is an apocalyptic number.

It is an amenable number.

42787648 is a deficient number, since it is larger than the sum of its proper divisors (42466944).

42787648 is a wasteful number, since it uses less digits than its factorization.

42787648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750 (or 2740 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 42787648 is about 6541.2267962516. The cubic root of 42787648 is about 349.7621458779.

The spelling of 42787648 in words is "forty-two million, seven hundred eighty-seven thousand, six hundred forty-eight".