40721032 has 16 divisors (see below), whose sum is σ = 83293200. Its totient is φ = 18509520.

The previous prime is 40721029. The next prime is 40721039. The reversal of 40721032 is 23012704.

It is not an unprimeable number, because it can be changed into a prime (40721039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231282 + ... + 231457.

It is an arithmetic number, because the mean of its divisors is an integer number (5205825).

Almost surely, 2^40721032 is an apocalyptic number.

It is an amenable number.

40721032 is an abundant number, since it is smaller than the sum of its proper divisors (42572168).

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

40721032 is a wasteful number, since it uses less digits than its factorization.

40721032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462756 (or 462752 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 40721032 is about 6381.3033151544. The cubic root of 40721032 is about 344.0378766659.

Adding to 40721032 its reverse (23012704), we get a palindrome (63733736).

The spelling of 40721032 in words is "forty million, seven hundred twenty-one thousand, thirty-two".