40768384 has 16 divisors (see below), whose sum is σ = 81218520. Its totient is φ = 20384128.

The previous prime is 40768369. The next prime is 40768393. The reversal of 40768384 is 48386704.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×40768384² = 3324122267942912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159124 + ... + 159379.

Almost surely, 2^40768384 is an apocalyptic number.

It is an amenable number.

40768384 is a deficient number, since it is larger than the sum of its proper divisors (40450136).

40768384 is an equidigital number, since it uses as much as digits as its factorization.

40768384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318517 (or 318505 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 40768384 is about 6385.0124510450. The cubic root of 40768384 is about 344.1711785515.

The spelling of 40768384 in words is "forty million, seven hundred sixty-eight thousand, three hundred eighty-four".