40136690 has 16 divisors (see below), whose sum is σ = 78814080. Its totient is φ = 14595120.

The previous prime is 40136687. The next prime is 40136713. The reversal of 40136690 is 9663104.

It is a super-2 number, since 2×40136690² = 3221907768312200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182330 + ... + 182549.

It is an arithmetic number, because the mean of its divisors is an integer number (4925880).

Almost surely, 2^40136690 is an apocalyptic number.

40136690 is a deficient number, since it is larger than the sum of its proper divisors (38677390).

40136690 is a wasteful number, since it uses less digits than its factorization.

40136690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364897.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 40136690 is about 6335.3523974598. The cubic root of 40136690 is about 342.3843074536.

Adding to 40136690 its reverse (9663104), we get a palindrome (49799794).

The spelling of 40136690 in words is "forty million, one hundred thirty-six thousand, six hundred ninety".