40688052 has 48 divisors (see below), whose sum is σ = 97675200. Its totient is φ = 13177600.

The previous prime is 40688029. The next prime is 40688057. The reversal of 40688052 is 25088604.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40688057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71224 + ... + 71792.

It is an arithmetic number, because the mean of its divisors is an integer number (2034900).

Almost surely, 2^40688052 is an apocalyptic number.

It is an amenable number.

40688052 is an abundant number, since it is smaller than the sum of its proper divisors (56987148).

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

40688052 is a wasteful number, since it uses less digits than its factorization.

40688052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 40688052 is about 6378.7186801112. The cubic root of 40688052 is about 343.9449727197.

The spelling of 40688052 in words is "forty million, six hundred eighty-eight thousand, fifty-two".