40305236 has 6 divisors (see below), whose sum is σ = 70534170. Its totient is φ = 20152616.

The previous prime is 40305227. The next prime is 40305241. The reversal of 40305236 is 63250304.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 3168400 = 6094^2 + 1780^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5038151 + ... + 5038158.

It is an arithmetic number, because the mean of its divisors is an integer number (11755695).

Almost surely, 2^40305236 is an apocalyptic number.

It is an amenable number.

40305236 is a deficient number, since it is larger than the sum of its proper divisors (30228934).

40305236 is a wasteful number, since it uses less digits than its factorization.

40305236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10076313 (or 10076311 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 40305236 is about 6348.6404843872. The cubic root of 40305236 is about 342.8628962990.

The spelling of 40305236 in words is "forty million, three hundred five thousand, two hundred thirty-six".