40660032 has 56 divisors (see below), whose sum is σ = 122952256. Its totient is φ = 11616768.

The previous prime is 40660031. The next prime is 40660033. The reversal of 40660032 is 23006604.

It is an interprime number because it is at equal distance from previous prime (40660031) and next prime (40660033).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40659990 and 40660008.

It is not an unprimeable number, because it can be changed into a prime (40660031) 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, 13783 + ... + 16470.

It is an arithmetic number, because the mean of its divisors is an integer number (2195576).

Almost surely, 2^40660032 is an apocalyptic number.

40660032 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40660032 is an abundant number, since it is smaller than the sum of its proper divisors (82292224).

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

40660032 is a wasteful number, since it uses less digits than its factorization.

40660032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30275 (or 30265 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 40660032 is about 6376.5219359773. The cubic root of 40660032 is about 343.8660015330.

Adding to 40660032 its reverse (23006604), we get a palindrome (63666636).

The spelling of 40660032 in words is "forty million, six hundred sixty thousand, thirty-two".