40451340 has 24 divisors (see below), whose sum is σ = 113263920. Its totient is φ = 10787008.

The previous prime is 40451339. The next prime is 40451351. The reversal of 40451340 is 4315404.

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, 337035 + ... + 337154.

It is an arithmetic number, because the mean of its divisors is an integer number (4719330).

Almost surely, 2^40451340 is an apocalyptic number.

It is an amenable number.

40451340 is an abundant number, since it is smaller than the sum of its proper divisors (72812580).

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

40451340 is a wasteful number, since it uses less digits than its factorization.

40451340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674201 (or 674199 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40451340 is about 6360.1367909818. The cubic root of 40451340 is about 343.2766823508.

Adding to 40451340 its reverse (4315404), we get a palindrome (44766744).

The spelling of 40451340 in words is "forty million, four hundred fifty-one thousand, three hundred forty".