1964228 has 48 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 779520.

The previous prime is 1964213. The next prime is 1964243. The reversal of 1964228 is 8224691.

It is an interprime number because it is at equal distance from previous prime (1964213) and next prime (1964243).

It is a junction number, because it is equal to n+sod(n) for n = 1964194 and 1964203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33263 + ... + 33321.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1964228 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 1964228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116800).

1964228 is an abundant number, since it is smaller than the sum of its proper divisors (2269372).

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

1964228 is a wasteful number, since it uses less digits than its factorization.

1964228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 138 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 1964228 is about 1401.5091865557. The cubic root of 1964228 is about 125.2364165757.

The spelling of 1964228 in words is "one million, nine hundred sixty-four thousand, two hundred twenty-eight".