1897272 has 48 divisors (see below), whose sum is σ = 5536440. Its totient is φ = 583488.

The previous prime is 1897243. The next prime is 1897277. The reversal of 1897272 is 2727981.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897277) 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, 78 + ... + 1949.

2^1897272 is an apocalyptic number.

1897272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1897272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768220).

1897272 is an abundant number, since it is smaller than the sum of its proper divisors (3639168).

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

1897272 is a wasteful number, since it uses less digits than its factorization.

1897272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2045 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1897272 is about 1377.4149701524. The cubic root of 1897272 is about 123.7969274120.

It can be divided in two parts, 18972 and 72, that added together give a square (19044 = 138²).

The spelling of 1897272 in words is "one million, eight hundred ninety-seven thousand, two hundred seventy-two".