40077320 has 16 divisors (see below), whose sum is σ = 90174060. Its totient is φ = 16030912.

The previous prime is 40077311. The next prime is 40077383. The reversal of 40077320 is 2377004.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 2353156 = 6142^2 + 1534^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500927 + ... + 501006.

Almost surely, 2^40077320 is an apocalyptic number.

40077320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40077320 is an abundant number, since it is smaller than the sum of its proper divisors (50096740).

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

40077320 is a wasteful number, since it uses less digits than its factorization.

40077320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001944 (or 1001940 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 40077320 is about 6330.6650519515. The cubic root of 40077320 is about 342.2154064034.

The spelling of 40077320 in words is "forty million, seventy-seven thousand, three hundred twenty".