40288846 has 16 divisors (see below), whose sum is σ = 65976624. Its totient is φ = 18339264.

The previous prime is 40288841. The next prime is 40288883. The reversal of 40288846 is 64888204.

It is a super-2 number, since 2×40288846² = 3246382224023432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40288799 and 40288808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40288841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8716 + ... + 12511.

It is an arithmetic number, because the mean of its divisors is an integer number (4123539).

Almost surely, 2^40288846 is an apocalyptic number.

40288846 is a deficient number, since it is larger than the sum of its proper divisors (25687778).

40288846 is a wasteful number, since it uses less digits than its factorization.

40288846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21315.

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 40288846 is about 6347.3495255894. The cubic root of 40288846 is about 342.8164152846.

The spelling of 40288846 in words is "forty million, two hundred eighty-eight thousand, eight hundred forty-six".