3129390 has 96 divisors (see below), whose sum is σ = 9266400. Its totient is φ = 725760.

The previous prime is 3129383. The next prime is 3129391. The reversal of 3129390 is 939213.

3129390 = T₁₃₁ + T₁₃₂ + ... + T₂₇₅.

3129390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28656 + ... + 28764.

It is an arithmetic number, because the mean of its divisors is an integer number (96525).

Almost surely, 2^3129390 is an apocalyptic number.

3129390 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 3129390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4633200).

3129390 is an abundant number, since it is smaller than the sum of its proper divisors (6137010).

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

3129390 is a wasteful number, since it uses less digits than its factorization.

3129390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 3129390 is about 1769.0081967023. The cubic root of 3129390 is about 146.2693158796.

The spelling of 3129390 in words is "three million, one hundred twenty-nine thousand, three hundred ninety".