1961208 has 24 divisors (see below), whose sum is σ = 5311800. Its totient is φ = 653712.

The previous prime is 1961173. The next prime is 1961213. The reversal of 1961208 is 8021691.

It is a tau number, because it is divible by the number of its divisors (24).

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13548 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (221325).

2^1961208 is an apocalyptic number.

1961208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1961208 is an abundant number, since it is smaller than the sum of its proper divisors (3350592).

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

1961208 is a wasteful number, since it uses less digits than its factorization.

1961208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27251 (or 27244 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1961208 is about 1400.4313621167. The cubic root of 1961208 is about 125.1722000017.

Adding to 1961208 its reverse (8021691), we get a palindrome (9982899).

The spelling of 1961208 in words is "one million, nine hundred sixty-one thousand, two hundred eight".