19082820 has 48 divisors (see below), whose sum is σ = 53621568. Its totient is φ = 5070720.

The previous prime is 19082803. The next prime is 19082831. The reversal of 19082820 is 2828091.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 33135 + ... + 33705.

It is an arithmetic number, because the mean of its divisors is an integer number (1117116).

Almost surely, 2^19082820 is an apocalyptic number.

19082820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19082820 is an abundant number, since it is smaller than the sum of its proper divisors (34538748).

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

19082820 is a wasteful number, since it uses less digits than its factorization.

19082820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 19082820 is about 4368.3887189672. The cubic root of 19082820 is about 267.2273169689.

The spelling of 19082820 in words is "nineteen million, eighty-two thousand, eight hundred twenty".