40700128 has 96 divisors (see below), whose sum is σ = 98461440. Its totient is φ = 16174080.

The previous prime is 40700113. The next prime is 40700161. The reversal of 40700128 is 82100704.

It is a junction number, because it is equal to n+sod(n) for n = 40700099 and 40700108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310623 + ... + 310753.

It is an arithmetic number, because the mean of its divisors is an integer number (1025640).

Almost surely, 2^40700128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40700128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49230720).

40700128 is an abundant number, since it is smaller than the sum of its proper divisors (57761312).

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

40700128 is a wasteful number, since it uses less digits than its factorization.

40700128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 40700128 is about 6379.6651949769. The cubic root of 40700128 is about 343.9789963740.

The spelling of 40700128 in words is "forty million, seven hundred thousand, one hundred twenty-eight".