40280084 has 24 divisors (see below), whose sum is σ = 79215360. Its totient is φ = 17781984.

The previous prime is 40280083. The next prime is 40280099. The reversal of 40280084 is 48008204.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40280083) 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, 15644 + ... + 18035.

It is an arithmetic number, because the mean of its divisors is an integer number (3300640).

Almost surely, 2^40280084 is an apocalyptic number.

It is an amenable number.

40280084 is a deficient number, since it is larger than the sum of its proper divisors (38935276).

40280084 is a wasteful number, since it uses less digits than its factorization.

40280084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33719 (or 33717 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 40280084 is about 6346.6592787072. The cubic root of 40280084 is about 342.7915616298.

Adding to 40280084 its reverse (48008204), we get a palindrome (88288288).

The spelling of 40280084 in words is "forty million, two hundred eighty thousand, eighty-four".