40705520 has 40 divisors (see below), whose sum is σ = 96849456. Its totient is φ = 15902208.

The previous prime is 40705517. The next prime is 40705541. The reversal of 40705520 is 2550704.

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

It is a congruent 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, 2477 + ... + 9356.

Almost surely, 2^40705520 is an apocalyptic number.

40705520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40705520 is an abundant number, since it is smaller than the sum of its proper divisors (56143936).

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

40705520 is a wasteful number, since it uses less digits than its factorization.

40705520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11889 (or 11883 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 40705520 is about 6380.0877736909. The cubic root of 40705520 is about 343.9941859482.

The spelling of 40705520 in words is "forty million, seven hundred five thousand, five hundred twenty".