40747280 has 40 divisors (see below), whose sum is σ = 108272832. Its totient is φ = 13970304.

The previous prime is 40747271. The next prime is 40747307. The reversal of 40747280 is 8274704.

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

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, 35822 + ... + 36941.

Almost surely, 2^40747280 is an apocalyptic number.

40747280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40747280 is an abundant number, since it is smaller than the sum of its proper divisors (67525552).

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

40747280 is a wasteful number, since it uses less digits than its factorization.

40747280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72783 (or 72777 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 40747280 is about 6383.3596170042. The cubic root of 40747280 is about 344.1117808720. Note that the first 3 decimals are identical.

The spelling of 40747280 in words is "forty million, seven hundred forty-seven thousand, two hundred eighty".