1961304 has 32 divisors (see below), whose sum is σ = 4976640. Its totient is φ = 644000.

The previous prime is 1961257. The next prime is 1961321. The reversal of 1961304 is 4031691.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (155520).

2^1961304 is an apocalyptic number.

It is an amenable number.

1961304 is an abundant number, since it is smaller than the sum of its proper divisors (3015336).

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

1961304 is a wasteful number, since it uses less digits than its factorization.

1961304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1961304 is about 1400.4656368508. The cubic root of 1961304 is about 125.1742423373.

Adding to 1961304 its reverse (4031691), we get a palindrome (5992995).

The spelling of 1961304 in words is "one million, nine hundred sixty-one thousand, three hundred four".