4155690 has 96 divisors (see below), whose sum is σ = 12705984. Its totient is φ = 860160.

The previous prime is 4155673. The next prime is 4155703. The reversal of 4155690 is 965514.

4155690 = T₁₀₀ + T₁₀₁ + ... + T₂₉₅.

It is a super-2 number, since 2×4155690² = 34539518752200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 47 ways as a sum of consecutive naturals, for example, 16042 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (132354).

Almost surely, 2^4155690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4155690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6352992).

4155690 is an abundant number, since it is smaller than the sum of its proper divisors (8550294).

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

4155690 is a wasteful number, since it uses less digits than its factorization.

4155690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 4155690 is about 2038.5509559489. The cubic root of 4155690 is about 160.7734684327.

It can be divided in two parts, 415 and 5690, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 4155690 in words is "four million, one hundred fifty-five thousand, six hundred ninety".