40688264 has 8 divisors (see below), whose sum is σ = 76290510. Its totient is φ = 20344128.

The previous prime is 40688251. The next prime is 40688287. The reversal of 40688264 is 46288604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30891364 + 9796900 = 5558^2 + 3130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2543009 + ... + 2543024.

Almost surely, 2^40688264 is an apocalyptic number.

It is an amenable number.

40688264 is a deficient number, since it is larger than the sum of its proper divisors (35602246).

40688264 is a wasteful number, since it uses less digits than its factorization.

40688264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086039 (or 5086035 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 40688264 is about 6378.7352978471. The cubic root of 40688264 is about 343.9455700794.

The spelling of 40688264 in words is "forty million, six hundred eighty-eight thousand, two hundred sixty-four".