4155870 has 64 divisors (see below), whose sum is σ = 10990080. Its totient is φ = 1001088.

The previous prime is 4155863. The next prime is 4155887. The reversal of 4155870 is 785514.

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

It is an Ulam number.

It is a congruent number.

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, 12952 + ... + 13268.

It is an arithmetic number, because the mean of its divisors is an integer number (171720).

Almost surely, 2^4155870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4155870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5495040).

4155870 is an abundant number, since it is smaller than the sum of its proper divisors (6834210).

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

4155870 is a wasteful number, since it uses less digits than its factorization.

4155870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 4155870 is about 2038.5951044776. The cubic root of 4155870 is about 160.7757896522.

The spelling of 4155870 in words is "four million, one hundred fifty-five thousand, eight hundred seventy".