3840690 has 32 divisors (see below), whose sum is σ = 10535040. Its totient is φ = 877824.

The previous prime is 3840689. The next prime is 3840703. The reversal of 3840690 is 960483.

It is a super-2 number, since 2×3840690² = 29501799352200, which contains 22 as substring.

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

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, 8935 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (329220).

Almost surely, 2^3840690 is an apocalyptic number.

3840690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3840690 is an abundant number, since it is smaller than the sum of its proper divisors (6694350).

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

3840690 is a wasteful number, since it uses less digits than its factorization.

3840690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18306.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 3840690 is about 1959.7678433937. The cubic root of 3840690 is about 156.6040844554.

The spelling of 3840690 in words is "three million, eight hundred forty thousand, six hundred ninety".