1997304 has 16 divisors (see below), whose sum is σ = 4993320. Its totient is φ = 665760.

The previous prime is 1997293. The next prime is 1997311. The reversal of 1997304 is 4037991.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41587 + ... + 41634.

2^1997304 is an apocalyptic number.

It is an amenable number.

1997304 is an abundant number, since it is smaller than the sum of its proper divisors (2996016).

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

1997304 is a wasteful number, since it uses less digits than its factorization.

1997304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83230 (or 83226 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1997304 is about 1413.2600609937. The cubic root of 1997304 is about 125.9354670800.

It can be divided in two parts, 199 and 7304, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 1997304 in words is "one million, nine hundred ninety-seven thousand, three hundred four".