40700040 has 128 divisors (see below), whose sum is σ = 131569920. Its totient is φ = 10035200.

The previous prime is 40700017. The next prime is 40700053. The reversal of 40700040 is 4000704.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 40699992 and 40700019.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144700 + ... + 144980.

It is an arithmetic number, because the mean of its divisors is an integer number (1027890).

Almost surely, 2^40700040 is an apocalyptic number.

40700040 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 40700040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65784960).

40700040 is an abundant number, since it is smaller than the sum of its proper divisors (90869880).

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

40700040 is a wasteful number, since it uses less digits than its factorization.

40700040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 40700040 is about 6379.6582980595. The cubic root of 40700040 is about 343.9787484618.

Adding to 40700040 its reverse (4000704), we get a palindrome (44700744).

The spelling of 40700040 in words is "forty million, seven hundred thousand, forty".