1961504 has 12 divisors (see below), whose sum is σ = 3861774. Its totient is φ = 980736.

The previous prime is 1961501. The next prime is 1961513. The reversal of 1961504 is 4051691.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 144400 = 1348^2 + 380^2 .

It is not an unprimeable number, because it can be changed into a prime (1961501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30617 + ... + 30680.

2^1961504 is an apocalyptic number.

It is an amenable number.

1961504 is a deficient number, since it is larger than the sum of its proper divisors (1900270).

1961504 is an equidigital number, since it uses as much as digits as its factorization.

1961504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61307 (or 61299 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1961504 is about 1400.5370398529. The cubic root of 1961504 is about 125.1784969893.

The spelling of 1961504 in words is "one million, nine hundred sixty-one thousand, five hundred four".