40321632 has 48 divisors (see below), whose sum is σ = 113989680. Its totient is φ = 12406272.

The previous prime is 40321621. The next prime is 40321643. The reversal of 40321632 is 23612304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40321621) and next prime (40321643).

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 40321599 and 40321608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14907 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (2374785).

Almost surely, 2^40321632 is an apocalyptic number.

It is an amenable number.

40321632 is an abundant number, since it is smaller than the sum of its proper divisors (73668048).

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

40321632 is a wasteful number, since it uses less digits than its factorization.

40321632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32335 (or 32327 counting only the distinct ones).

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

The square root of 40321632 is about 6349.9316531755. The cubic root of 40321632 is about 342.9093817228.

Adding to 40321632 its reverse (23612304), we get a palindrome (63933936).

The spelling of 40321632 in words is "forty million, three hundred twenty-one thousand, six hundred thirty-two".