897228000 has 144 divisors (see below), whose sum is σ = 3184389936. Its totient is φ = 239251200.

The previous prime is 897227993. The next prime is 897228019. The reversal of 897228000 is 822798.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23539 + ... + 48461.

It is an arithmetic number, because the mean of its divisors is an integer number (22113819).

Almost surely, 2^897228000 is an apocalyptic number.

897228000 is a gapful number since it is divisible by the number (80) 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 897228000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592194968).

897228000 is an abundant number, since it is smaller than the sum of its proper divisors (2287161936).

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

897228000 is a wasteful number, since it uses less digits than its factorization.

897228000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24954 (or 24933 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 897228000 is about 29953.7643711104. The cubic root of 897228000 is about 964.4971294238.

The spelling of 897228000 in words is "eight hundred ninety-seven million, two hundred twenty-eight thousand".