40791280 has 40 divisors (see below), whose sum is σ = 95163552. Its totient is φ = 16260864.

The previous prime is 40791251. The next prime is 40791287. The reversal of 40791280 is 8219704.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40791287) 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, 29157 + ... + 30523.

Almost surely, 2^40791280 is an apocalyptic number.

40791280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40791280 is an abundant number, since it is smaller than the sum of its proper divisors (54372272).

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

40791280 is a wasteful number, since it uses less digits than its factorization.

40791280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40791280 is about 6386.8051481159. The cubic root of 40791280 is about 344.2355966765.

The spelling of 40791280 in words is "forty million, seven hundred ninety-one thousand, two hundred eighty".