40032212 has 48 divisors (see below), whose sum is σ = 81829440. Its totient is φ = 16934400.

The previous prime is 40032211. The next prime is 40032227. The reversal of 40032212 is 21223004.

It is a super-2 number, since 2×40032212² = 3205155995225888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40032211) 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, 81287 + ... + 81777.

It is an arithmetic number, because the mean of its divisors is an integer number (1704780).

Almost surely, 2^40032212 is an apocalyptic number.

It is an amenable number.

40032212 is an abundant number, since it is smaller than the sum of its proper divisors (41797228).

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

40032212 is a wasteful number, since it uses less digits than its factorization.

40032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40032212 is about 6327.1013900522. The cubic root of 40032212 is about 342.0869676121.

Adding to 40032212 its reverse (21223004), we get a palindrome (61255216).

The spelling of 40032212 in words is "forty million, thirty-two thousand, two hundred twelve".