40297232 has 10 divisors (see below), whose sum is σ = 78075918. Its totient is φ = 20148608.

The previous prime is 40297223. The next prime is 40297237. The reversal of 40297232 is 23279204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30958096 + 9339136 = 5564^2 + 3056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40297195 and 40297204.

It is not an unprimeable number, because it can be changed into a prime (40297237) 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, 1259273 + ... + 1259304.

Almost surely, 2^40297232 is an apocalyptic number.

It is an amenable number.

40297232 is a deficient number, since it is larger than the sum of its proper divisors (37778686).

40297232 is a wasteful number, since it uses less digits than its factorization.

40297232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518585 (or 2518579 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 40297232 is about 6348.0100819076. The cubic root of 40297232 is about 342.8401990304.

The spelling of 40297232 in words is "forty million, two hundred ninety-seven thousand, two hundred thirty-two".