1822788 has 36 divisors (see below), whose sum is σ = 5027568. Its totient is φ = 552240.

The previous prime is 1822787. The next prime is 1822811. The reversal of 1822788 is 8872281.

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

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

It is not an unprimeable number, because it can be changed into a prime (1822781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 2697.

2^1822788 is an apocalyptic number.

1822788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1822788 is an abundant number, since it is smaller than the sum of its proper divisors (3204780).

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

1822788 is a wasteful number, since it uses less digits than its factorization.

1822788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624 (or 4619 counting only the distinct ones).

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

The square root of 1822788 is about 1350.1066624530. The cubic root of 1822788 is about 122.1552265830.

The spelling of 1822788 in words is "one million, eight hundred twenty-two thousand, seven hundred eighty-eight".