3867870 has 32 divisors (see below), whose sum is σ = 9584640. Its totient is φ = 997920.

The previous prime is 3867859. The next prime is 3867881. The reversal of 3867870 is 787683.

It is an interprime number because it is at equal distance from previous prime (3867859) and next prime (3867881).

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, 1150 + ... + 3009.

It is an arithmetic number, because the mean of its divisors is an integer number (299520).

Almost surely, 2^3867870 is an apocalyptic number.

3867870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3867870 is an abundant number, since it is smaller than the sum of its proper divisors (5716770).

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

3867870 is a wasteful number, since it uses less digits than its factorization.

3867870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 3867870 is about 1966.6901128546. The cubic root of 3867870 is about 156.9726377999.

It can be divided in two parts, 386 and 7870, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 3867870 in words is "three million, eight hundred sixty-seven thousand, eight hundred seventy".