1863420 has 48 divisors (see below), whose sum is σ = 5621280. Its totient is φ = 458496.

The previous prime is 1863413. The next prime is 1863451. The reversal of 1863420 is 243681.

It is a happy number.

It is a d-powerful number, because it can be written as 1 + 8³ + 6⁸ + 3¹¹ + 4⁶ + 2¹¹ + 0 .

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, 415 + ... + 1974.

It is an arithmetic number, because the mean of its divisors is an integer number (117110).

2^1863420 is an apocalyptic number.

1863420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1863420 is an abundant number, since it is smaller than the sum of its proper divisors (3757860).

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

1863420 is a wasteful number, since it uses less digits than its factorization.

1863420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1863420 is about 1365.0714267026. The cubic root of 1863420 is about 123.0562238828.

The spelling of 1863420 in words is "one million, eight hundred sixty-three thousand, four hundred twenty".