40688574 has 16 divisors (see below), whose sum is σ = 81455760. Its totient is φ = 13549760.

The previous prime is 40688561. The next prime is 40688581. The reversal of 40688574 is 47588604.

It is a super-3 number, since 3×40688574³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5104 + ... + 10364.

It is an arithmetic number, because the mean of its divisors is an integer number (5090985).

Almost surely, 2^40688574 is an apocalyptic number.

40688574 is an abundant number, since it is smaller than the sum of its proper divisors (40767186).

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

40688574 is a wasteful number, since it uses less digits than its factorization.

40688574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6555.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 40688574 is about 6378.7595972885. The cubic root of 40688574 is about 343.9464435733.

The spelling of 40688574 in words is "forty million, six hundred eighty-eight thousand, five hundred seventy-four".