40690080 has 96 divisors (see below), whose sum is σ = 142430400. Its totient is φ = 10849536.

The previous prime is 40690063. The next prime is 40690093. The reversal of 40690080 is 8009604.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×40690080² = 3311365220812800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 390 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (1483650).

Almost surely, 2^40690080 is an apocalyptic number.

40690080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40690080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71215200).

40690080 is an abundant number, since it is smaller than the sum of its proper divisors (101740320).

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

40690080 is a wasteful number, since it uses less digits than its factorization.

40690080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9443 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 40690080 is about 6378.8776442255. The cubic root of 40690080 is about 343.9506870001.

Adding to 40690080 its reverse (8009604), we get a palindrome (48699684).

The spelling of 40690080 in words is "forty million, six hundred ninety thousand, eighty".