1961288 has 16 divisors (see below), whose sum is σ = 4202880. Its totient is φ = 840528.

The previous prime is 1961257. The next prime is 1961321. The reversal of 1961288 is 8821691.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17456 + ... + 17567.

It is an arithmetic number, because the mean of its divisors is an integer number (262680).

2^1961288 is an apocalyptic number.

It is an amenable number.

1961288 is an abundant number, since it is smaller than the sum of its proper divisors (2241592).

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

1961288 is a wasteful number, since it uses less digits than its factorization.

1961288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35036 (or 35032 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 1961288 is about 1400.4599244534. The cubic root of 1961288 is about 125.1739019527.

The spelling of 1961288 in words is "one million, nine hundred sixty-one thousand, two hundred eighty-eight".