40481280 has 240 divisors, whose sum is σ = 160864704. Its totient is φ = 9216000.

The previous prime is 40481269. The next prime is 40481291. The reversal of 40481280 is 8218404.

It is an interprime number because it is at equal distance from previous prime (40481269) and next prime (40481291).

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161155 + ... + 161405.

Almost surely, 2^40481280 is an apocalyptic number.

40481280 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 40481280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80432352).

40481280 is an abundant number, since it is smaller than the sum of its proper divisors (120383424).

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

40481280 is a wasteful number, since it uses less digits than its factorization.

40481280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 40481280 is about 6362.4900785777. The cubic root of 40481280 is about 343.3613533756.

Adding to 40481280 its reverse (8218404), we get a palindrome (48699684).

The spelling of 40481280 in words is "forty million, four hundred eighty-one thousand, two hundred eighty".