40645132 has 24 divisors (see below), whose sum is σ = 77937552. Its totient is φ = 18393600.

The previous prime is 40645103. The next prime is 40645133. The reversal of 40645132 is 23154604.

It is a junction number, because it is equal to n+sod(n) for n = 40645097 and 40645106.

It is not an unprimeable number, because it can be changed into a prime (40645133) 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, 8688 + ... + 12520.

It is an arithmetic number, because the mean of its divisors is an integer number (3247398).

Almost surely, 2^40645132 is an apocalyptic number.

It is an amenable number.

40645132 is a deficient number, since it is larger than the sum of its proper divisors (37292420).

40645132 is a wasteful number, since it uses less digits than its factorization.

40645132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40645132 is about 6375.3534803962. The cubic root of 40645132 is about 343.8239927990.

Adding to 40645132 its reverse (23154604), we get a palindrome (63799736).

The spelling of 40645132 in words is "forty million, six hundred forty-five thousand, one hundred thirty-two".