40947280 has 160 divisors (see below), whose sum is σ = 114278400. Its totient is φ = 13478400.

The previous prime is 40947253. The next prime is 40947317. The reversal of 40947280 is 8274904.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518281 + ... + 518359.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^40947280 is an apocalyptic number.

40947280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40947280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57139200).

40947280 is an abundant number, since it is smaller than the sum of its proper divisors (73331120).

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

40947280 is a wasteful number, since it uses less digits than its factorization.

40947280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 147 counting only the distinct ones).

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

The square root of 40947280 is about 6399.0061728365. The cubic root of 40947280 is about 344.6738638862.

The spelling of 40947280 in words is "forty million, nine hundred forty-seven thousand, two hundred eighty".