1808748 has 36 divisors (see below), whose sum is σ = 4673760. Its totient is φ = 589536.

The previous prime is 1808713. The next prime is 1808761. The reversal of 1808748 is 8478081.

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

It is a super-3 number, since 3×1808748³ = 17752333433952614976, which contains 333 as substring.

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

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, 1158 + ... + 2226.

2^1808748 is an apocalyptic number.

1808748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336880).

1808748 is an abundant number, since it is smaller than the sum of its proper divisors (2865012).

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

1808748 is a wasteful number, since it uses less digits than its factorization.

1808748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 1808748 is about 1344.8970220801. The cubic root of 1808748 is about 121.8407848727.

It can be divided in two parts, 1808 and 748, that added together give a triangular number (2556 = T₇₁).

The spelling of 1808748 in words is "one million, eight hundred eight thousand, seven hundred forty-eight".