40401236 has 12 divisors (see below), whose sum is σ = 72426900. Its totient is φ = 19707840.

The previous prime is 40401223. The next prime is 40401241. The reversal of 40401236 is 63210404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2085136 + 38316100 = 1444^2 + 6190^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123011 + ... + 123338.

It is an arithmetic number, because the mean of its divisors is an integer number (6035575).

Almost surely, 2^40401236 is an apocalyptic number.

It is an amenable number.

40401236 is a deficient number, since it is larger than the sum of its proper divisors (32025664).

40401236 is a wasteful number, since it uses less digits than its factorization.

40401236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246394 (or 246392 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40401236 is about 6356.1966615265. The cubic root of 40401236 is about 343.1348935494.

The spelling of 40401236 in words is "forty million, four hundred one thousand, two hundred thirty-six".