40206740 has 24 divisors (see below), whose sum is σ = 96496512. Its totient is φ = 13785120.

The previous prime is 40206709. The next prime is 40206811. The reversal of 40206740 is 4760204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143456 + ... + 143735.

It is an arithmetic number, because the mean of its divisors is an integer number (4020688).

Almost surely, 2^40206740 is an apocalyptic number.

It is an amenable number.

40206740 is an abundant number, since it is smaller than the sum of its proper divisors (56289772).

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

40206740 is a wasteful number, since it uses less digits than its factorization.

40206740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287207 (or 287205 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40206740 is about 6340.8784880330. The cubic root of 40206740 is about 342.5833778575.

Adding to 40206740 its reverse (4760204), we get a palindrome (44966944).

The spelling of 40206740 in words is "forty million, two hundred six thousand, seven hundred forty".