3155490 has 128 divisors (see below), whose sum is σ = 9676800. Its totient is φ = 725760.

The previous prime is 3155473. The next prime is 3155513. The reversal of 3155490 is 945513.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101775 + ... + 101805.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

Almost surely, 2^3155490 is an apocalyptic number.

3155490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3155490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4838400).

3155490 is an abundant number, since it is smaller than the sum of its proper divisors (6521310).

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

3155490 is a wasteful number, since it uses less digits than its factorization.

3155490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 3155490 is about 1776.3698939129. The cubic root of 3155490 is about 146.6748331082.

The spelling of 3155490 in words is "three million, one hundred fifty-five thousand, four hundred ninety".