40642772 has 6 divisors (see below), whose sum is σ = 71124858. Its totient is φ = 20321384.

The previous prime is 40642769. The next prime is 40642781. The reversal of 40642772 is 27724604.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 244036 = 6356^2 + 494^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080343 + ... + 5080350.

It is an arithmetic number, because the mean of its divisors is an integer number (11854143).

Almost surely, 2^40642772 is an apocalyptic number.

It is an amenable number.

40642772 is a deficient number, since it is larger than the sum of its proper divisors (30482086).

40642772 is a wasteful number, since it uses less digits than its factorization.

40642772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160697 (or 10160695 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 40642772 is about 6375.1683899329. The cubic root of 40642772 is about 343.8173381249.

It can be divided in two parts, 40642 and 772, that added together give a palindrome (41414).

The spelling of 40642772 in words is "forty million, six hundred forty-two thousand, seven hundred seventy-two".