40691250 has 60 divisors (see below), whose sum is σ = 110200662. Its totient is φ = 10848000.

The previous prime is 40691249. The next prime is 40691267. The reversal of 40691250 is 5219604.

40691250 is a `hidden beast` number, since 406 + 9 + 1 + 250 = 666.

40691250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 2461761 + 38229489 = 1569^2 + 6183^2 .

It is a super-3 number, since 3×40691250³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9442 + ... + 13058.

Almost surely, 2^40691250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40691250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55100331).

40691250 is an abundant number, since it is smaller than the sum of its proper divisors (69509412).

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

40691250 is a wasteful number, since it uses less digits than its factorization.

40691250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40691250 is about 6378.9693524895. The cubic root of 40691250 is about 343.9539836140.

The spelling of 40691250 in words is "forty million, six hundred ninety-one thousand, two hundred fifty".