40688632 has 8 divisors (see below), whose sum is σ = 76291200. Its totient is φ = 20344312.

The previous prime is 40688623. The next prime is 40688639. The reversal of 40688632 is 23688604.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40688591 and 40688600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40688639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2543032 + ... + 2543047.

It is an arithmetic number, because the mean of its divisors is an integer number (9536400).

Almost surely, 2^40688632 is an apocalyptic number.

It is an amenable number.

40688632 is a deficient number, since it is larger than the sum of its proper divisors (35602568).

40688632 is a wasteful number, since it uses less digits than its factorization.

40688632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086085 (or 5086081 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 40688632 is about 6378.7641436253. The cubic root of 40688632 is about 343.9466070007.

The spelling of 40688632 in words is "forty million, six hundred eighty-eight thousand, six hundred thirty-two".