897138 has 48 divisors (see below), whose sum is σ = 2223936. Its totient is φ = 258720.

The previous prime is 897137. The next prime is 897157. The reversal of 897138 is 831798.

897138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4456 + ... + 4652.

It is an arithmetic number, because the mean of its divisors is an integer number (46332).

2⁸⁹⁷¹³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111968).

897138 is an abundant number, since it is smaller than the sum of its proper divisors (1326798).

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

897138 is a wasteful number, since it uses less digits than its factorization.

897138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 236 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 897138 is about 947.1736905130. The cubic root of 897138 is about 96.4464879113.

It can be divided in two parts, 8971 and 38, that added together give a palindrome (9009).

The spelling of 897138 in words is "eight hundred ninety-seven thousand, one hundred thirty-eight".