1997230 has 32 divisors (see below), whose sum is σ = 3810240. Its totient is φ = 752640.

The previous prime is 1997213. The next prime is 1997231. The reversal of 1997230 is 327991.

It is a junction number, because it is equal to n+sod(n) for n = 1997192 and 1997201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20542 + ... + 20638.

It is an arithmetic number, because the mean of its divisors is an integer number (119070).

2^1997230 is an apocalyptic number.

1997230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1997230 is a deficient number, since it is larger than the sum of its proper divisors (1813010).

1997230 is a wasteful number, since it uses less digits than its factorization.

1997230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1997230 is about 1413.2338801486. The cubic root of 1997230 is about 125.9339117602.

It can be divided in two parts, 19972 and 30, that added together give a palindrome (20002).

The spelling of 1997230 in words is "one million, nine hundred ninety-seven thousand, two hundred thirty".