40023208 has 8 divisors (see below), whose sum is σ = 75043530. Its totient is φ = 20011600.

The previous prime is 40023173. The next prime is 40023209. The reversal of 40023208 is 80232004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31832164 + 8191044 = 5642^2 + 2862^2 .

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

It is a super-2 number, since 2×40023208² = 3203714357222528, which contains 22 as substring.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40023209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501443 + ... + 2501458.

Almost surely, 2^40023208 is an apocalyptic number.

It is an amenable number.

40023208 is a deficient number, since it is larger than the sum of its proper divisors (35020322).

40023208 is a wasteful number, since it uses less digits than its factorization.

40023208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002907 (or 5002903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40023208 is about 6326.3898077814. The cubic root of 40023208 is about 342.0613184172.

The spelling of 40023208 in words is "forty million, twenty-three thousand, two hundred eight".