40070304 has 36 divisors (see below), whose sum is σ = 113950746. Its totient is φ = 13356672.

The previous prime is 40070293. The next prime is 40070333. The reversal of 40070304 is 40307004.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 19820304 = 4500^2 + 4452^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 69279 + ... + 69854.

Almost surely, 2^40070304 is an apocalyptic number.

It is an amenable number.

40070304 is an abundant number, since it is smaller than the sum of its proper divisors (73880442).

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

40070304 is a wasteful number, since it uses less digits than its factorization.

40070304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139149 (or 139138 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40070304 is about 6330.1108995025. The cubic root of 40070304 is about 342.1954356451.

Adding to 40070304 its reverse (40307004), we get a palindrome (80377308).

The spelling of 40070304 in words is "forty million, seventy thousand, three hundred four".