40155020 has 48 divisors (see below), whose sum is σ = 90357120. Its totient is φ = 14936064.

The previous prime is 40155007. The next prime is 40155041. The reversal of 40155020 is 2055104.

40155020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40155020² = 3224851262400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 40155020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29597 + ... + 30923.

It is an arithmetic number, because the mean of its divisors is an integer number (1882440).

Almost surely, 2^40155020 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 40155020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45178560).

40155020 is an abundant number, since it is smaller than the sum of its proper divisors (50202100).

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

40155020 is a wasteful number, since it uses less digits than its factorization.

40155020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 40155020 is about 6336.7988764044. The cubic root of 40155020 is about 342.4364206134.

The spelling of 40155020 in words is "forty million, one hundred fifty-five thousand, twenty".