40078828 has 12 divisors (see below), whose sum is σ = 73829560. Its totient is φ = 18984672.

The previous prime is 40078823. The next prime is 40078849. The reversal of 40078828 is 82887004.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40078823) 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, 263601 + ... + 263752.

Almost surely, 2^40078828 is an apocalyptic number.

It is an amenable number.

40078828 is a deficient number, since it is larger than the sum of its proper divisors (33750732).

40078828 is a wasteful number, since it uses less digits than its factorization.

40078828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527376 (or 527374 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 40078828 is about 6330.7841536416. The cubic root of 40078828 is about 342.2196985596.

The spelling of 40078828 in words is "forty million, seventy-eight thousand, eight hundred twenty-eight".