40636234 has 4 divisors (see below), whose sum is σ = 60954354. Its totient is φ = 20318116.

The previous prime is 40636229. The next prime is 40636259. The reversal of 40636234 is 43263604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40360609 + 275625 = 6353^2 + 525^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10159057 + ... + 10159060.

Almost surely, 2^40636234 is an apocalyptic number.

40636234 is a deficient number, since it is larger than the sum of its proper divisors (20318120).

40636234 is a wasteful number, since it uses less digits than its factorization.

40636234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20318119.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 40636234 is about 6374.6555985402. The cubic root of 40636234 is about 343.7989010762.

Adding to 40636234 its reverse (43263604), we get a palindrome (83899838).

The spelling of 40636234 in words is "forty million, six hundred thirty-six thousand, two hundred thirty-four".