40230306 has 24 divisors (see below), whose sum is σ = 87335820. Its totient is φ = 13383936.

The previous prime is 40230301. The next prime is 40230329. The reversal of 40230306 is 60303204.

It can be written as a sum of positive squares in 2 ways, for example, as 38007225 + 2223081 = 6165^2 + 1491^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40230301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8790 + ... + 12558.

Almost surely, 2^40230306 is an apocalyptic number.

40230306 is an abundant number, since it is smaller than the sum of its proper divisors (47105514).

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

40230306 is a wasteful number, since it uses less digits than its factorization.

40230306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40230306 is about 6342.7364756862. The cubic root of 40230306 is about 342.6502965141.

The spelling of 40230306 in words is "forty million, two hundred thirty thousand, three hundred six".