1897416 has 72 divisors (see below), whose sum is σ = 5497830. Its totient is φ = 590976.

The previous prime is 1897409. The next prime is 1897429. The reversal of 1897416 is 6147981.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 324900 = 1254^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25956 + ... + 26028.

2^1897416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1897416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2748915).

1897416 is an abundant number, since it is smaller than the sum of its proper divisors (3600414).

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

1897416 is a wasteful number, since it uses less digits than its factorization.

1897416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 97 counting only the distinct ones).

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

The square root of 1897416 is about 1377.4672409898. The cubic root of 1897416 is about 123.8000593310.

The spelling of 1897416 in words is "one million, eight hundred ninety-seven thousand, four hundred sixteen".