40169620 has 12 divisors (see below), whose sum is σ = 84356244. Its totient is φ = 16067840.

The previous prime is 40169609. The next prime is 40169653. The reversal of 40169620 is 2696104.

It can be written as a sum of positive squares in 2 ways, for example, as 24265476 + 15904144 = 4926^2 + 3988^2 .

It is a super-2 number, since 2×40169620² = 3227196741888800, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 1004221 + ... + 1004260.

It is an arithmetic number, because the mean of its divisors is an integer number (7029687).

Almost surely, 2^40169620 is an apocalyptic number.

It is an amenable number.

40169620 is an abundant number, since it is smaller than the sum of its proper divisors (44186624).

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

40169620 is a wasteful number, since it uses less digits than its factorization.

40169620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008490 (or 2008488 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40169620 is about 6337.9507729234. The cubic root of 40169620 is about 342.4779178404.

The spelling of 40169620 in words is "forty million, one hundred sixty-nine thousand, six hundred twenty".