1863428 has 24 divisors (see below), whose sum is σ = 3791424. Its totient is φ = 784800.

The previous prime is 1863413. The next prime is 1863451. The reversal of 1863428 is 8243681.

It is a super-2 number, since 2×1863428² = 6944727822368, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 8 + 6⁸ + 3¹¹ + 4⁶ + 2¹¹ + 8³ .

It is a junction number, because it is equal to n+sod(n) for n = 1863394 and 1863403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (157976).

2^1863428 is an apocalyptic number.

It is an amenable number.

1863428 is an abundant number, since it is smaller than the sum of its proper divisors (1927996).

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

1863428 is a wasteful number, since it uses less digits than its factorization.

1863428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1161 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1863428 is about 1365.0743569491. The cubic root of 1863428 is about 123.0563999834.

The spelling of 1863428 in words is "one million, eight hundred sixty-three thousand, four hundred twenty-eight".