40185774 has 32 divisors (see below), whose sum is σ = 91719840. Its totient is φ = 13032576.

The previous prime is 40185767. The next prime is 40185791. The reversal of 40185774 is 47758104.

It is a super-2 number, since 2×40185774² = 3229792863958152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8059 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (2866245).

Almost surely, 2^40185774 is an apocalyptic number.

40185774 is an abundant number, since it is smaller than the sum of its proper divisors (51534066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40185774 is a wasteful number, since it uses less digits than its factorization.

40185774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20161 (or 20155 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 40185774 is about 6339.2250315003. The cubic root of 40185774 is about 342.5238202482.

The spelling of 40185774 in words is "forty million, one hundred eighty-five thousand, seven hundred seventy-four".