1821048 has 32 divisors (see below), whose sum is σ = 4752000. Its totient is φ = 580448.

The previous prime is 1821037. The next prime is 1821067. The reversal of 1821048 is 8401281.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 1098 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (148500).

2^1821048 is an apocalyptic number.

It is an amenable number.

1821048 is an abundant number, since it is smaller than the sum of its proper divisors (2930952).

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

1821048 is a wasteful number, since it uses less digits than its factorization.

1821048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1821048 is about 1349.4621150666. The cubic root of 1821048 is about 122.1163451621.

The spelling of 1821048 in words is "one million, eight hundred twenty-one thousand, forty-eight".