40572212 has 6 divisors (see below), whose sum is σ = 71001378. Its totient is φ = 20286104.

The previous prime is 40572197. The next prime is 40572229. The reversal of 40572212 is 21227504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28153636 + 12418576 = 5306^2 + 3524^2 .

It is a super-2 number, since 2×40572212² = 3292208773145888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5071523 + ... + 5071530.

It is an arithmetic number, because the mean of its divisors is an integer number (11833563).

Almost surely, 2^40572212 is an apocalyptic number.

It is an amenable number.

40572212 is a deficient number, since it is larger than the sum of its proper divisors (30429166).

40572212 is a wasteful number, since it uses less digits than its factorization.

40572212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143057 (or 10143055 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40572212 is about 6369.6320144887. The cubic root of 40572212 is about 343.6182555421.

Adding to 40572212 its reverse (21227504), we get a palindrome (61799716).

The spelling of 40572212 in words is "forty million, five hundred seventy-two thousand, two hundred twelve".