40645080 has 144 divisors (see below), whose sum is σ = 152165520. Its totient is φ = 9217152.

The previous prime is 40645069. The next prime is 40645103. The reversal of 40645080 is 8054604.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 319977 + ... + 320103.

It is an arithmetic number, because the mean of its divisors is an integer number (1056705).

Almost surely, 2^40645080 is an apocalyptic number.

40645080 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 40645080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76082760).

40645080 is an abundant number, since it is smaller than the sum of its proper divisors (111520440).

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

40645080 is a wasteful number, since it uses less digits than its factorization.

40645080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40645080 is about 6375.3494021897. The cubic root of 40645080 is about 343.8238461734.

Adding to 40645080 its reverse (8054604), we get a palindrome (48699684).

The spelling of 40645080 in words is "forty million, six hundred forty-five thousand, eighty".