40186048 has 56 divisors (see below), whose sum is σ = 91748864. Its totient is φ = 17107200.

The previous prime is 40186039. The next prime is 40186049. The reversal of 40186048 is 84068104.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×40186048² = 3229836907716608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40186049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121243 + ... + 121573.

Almost surely, 2^40186048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40186048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45874432).

40186048 is an abundant number, since it is smaller than the sum of its proper divisors (51562816).

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

40186048 is a wasteful number, since it uses less digits than its factorization.

40186048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 40186048 is about 6339.2466429379. The cubic root of 40186048 is about 342.5245987270.

The spelling of 40186048 in words is "forty million, one hundred eighty-six thousand, forty-eight".