3868740 has 36 divisors (see below), whose sum is σ = 11735724. Its totient is φ = 1031616.

The previous prime is 3868729. The next prime is 3868751. The reversal of 3868740 is 478683.

It is an interprime number because it is at equal distance from previous prime (3868729) and next prime (3868751).

It can be written as a sum of positive squares in 2 ways, for example, as 799236 + 3069504 = 894^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3868695 and 3868704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10567 + ... + 10926.

Almost surely, 2^3868740 is an apocalyptic number.

3868740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3868740 is an abundant number, since it is smaller than the sum of its proper divisors (7866984).

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

3868740 is a wasteful number, since it uses less digits than its factorization.

3868740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21508 (or 21503 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 3868740 is about 1966.9112842220. The cubic root of 3868740 is about 156.9844062027.

The spelling of 3868740 in words is "three million, eight hundred sixty-eight thousand, seven hundred forty".