40630032 has 80 divisors (see below), whose sum is σ = 117542080. Its totient is φ = 13436928.

The previous prime is 40630019. The next prime is 40630039. The reversal of 40630032 is 23003604.

40630032 is a `hidden beast` number, since 4 + 0 + 630 + 0 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40629987 and 40630014.

It is not an unprimeable number, because it can be changed into a prime (40630039) 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, 70128 + ... + 70704.

It is an arithmetic number, because the mean of its divisors is an integer number (1469276).

Almost surely, 2^40630032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40630032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58771040).

40630032 is an abundant number, since it is smaller than the sum of its proper divisors (76912048).

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

40630032 is a wasteful number, since it uses less digits than its factorization.

40630032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40630032 is about 6374.1691223249. The cubic root of 40630032 is about 343.7814097139.

Adding to 40630032 its reverse (23003604), we get a palindrome (63633636).

The spelling of 40630032 in words is "forty million, six hundred thirty thousand, thirty-two".