40709284 has 24 divisors (see below), whose sum is σ = 88820928. Its totient is φ = 15860640.

The previous prime is 40709219. The next prime is 40709329. The reversal of 40709284 is 48290704.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65779 + ... + 66394.

It is an arithmetic number, because the mean of its divisors is an integer number (3700872).

Almost surely, 2^40709284 is an apocalyptic number.

40709284 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40709284 is an abundant number, since it is smaller than the sum of its proper divisors (48111644).

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

40709284 is a wasteful number, since it uses less digits than its factorization.

40709284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132195 (or 132193 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 40709284 is about 6380.3827471399. The cubic root of 40709284 is about 344.0047885578.

Adding to 40709284 its reverse (48290704), we get a palindrome (88999988).

The spelling of 40709284 in words is "forty million, seven hundred nine thousand, two hundred eighty-four".