36400138 has 16 divisors (see below), whose sum is σ = 57162240. Its totient is φ = 17362800.

The previous prime is 36400121. The next prime is 36400141. The reversal of 36400138 is 83100463.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268 + ... + 8536.

It is an arithmetic number, because the mean of its divisors is an integer number (3572640).

Almost surely, 2^36400138 is an apocalyptic number.

36400138 is a deficient number, since it is larger than the sum of its proper divisors (20762102).

36400138 is a wasteful number, since it uses less digits than its factorization.

36400138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 36400138 is about 6033.2526882271. The cubic root of 36400138 is about 331.4115780845.

The spelling of 36400138 in words is "thirty-six million, four hundred thousand, one hundred thirty-eight".