40490620 has 12 divisors (see below), whose sum is σ = 85030344. Its totient is φ = 16196240.

The previous prime is 40490587. The next prime is 40490629. The reversal of 40490620 is 2609404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40490629) 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, 1012246 + ... + 1012285.

It is an arithmetic number, because the mean of its divisors is an integer number (7085862).

Almost surely, 2^40490620 is an apocalyptic number.

It is an amenable number.

40490620 is an abundant number, since it is smaller than the sum of its proper divisors (44539724).

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

40490620 is a wasteful number, since it uses less digits than its factorization.

40490620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024540 (or 2024538 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40490620 is about 6363.2240256021. The cubic root of 40490620 is about 343.3877585718.

The spelling of 40490620 in words is "forty million, four hundred ninety thousand, six hundred twenty".