3138870 has 32 divisors (see below), whose sum is σ = 8610048. Its totient is φ = 717408.

The previous prime is 3138869. The next prime is 3138881. The reversal of 3138870 is 788313.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7264 + ... + 7683.

It is an arithmetic number, because the mean of its divisors is an integer number (269064).

Almost surely, 2^3138870 is an apocalyptic number.

3138870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3138870 is an abundant number, since it is smaller than the sum of its proper divisors (5471178).

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

3138870 is a wasteful number, since it uses less digits than its factorization.

3138870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14964.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 3138870 is about 1771.6856380295. The cubic root of 3138870 is about 146.4168670285.

The spelling of 3138870 in words is "three million, one hundred thirty-eight thousand, eight hundred seventy".