40707440 has 40 divisors (see below), whose sum is σ = 95157600. Its totient is φ = 16194816.

The previous prime is 40707439. The next prime is 40707449. The reversal of 40707440 is 4470704.

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 (40707449) 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, 14642 + ... + 17198.

It is an arithmetic number, because the mean of its divisors is an integer number (2378940).

Almost surely, 2^40707440 is an apocalyptic number.

40707440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40707440 is an abundant number, since it is smaller than the sum of its proper divisors (54450160).

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

40707440 is a wasteful number, since it uses less digits than its factorization.

40707440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 40707440 is about 6380.2382400660. The cubic root of 40707440 is about 343.9995943749. Note that the first 3 decimals are identical.

The spelling of 40707440 in words is "forty million, seven hundred seven thousand, four hundred forty".