1977144 has 32 divisors (see below), whose sum is σ = 5323920. Its totient is φ = 608256.

The previous prime is 1977139. The next prime is 1977163. The reversal of 1977144 is 4417791.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2857 + ... + 3480.

2^1977144 is an apocalyptic number.

It is an amenable number.

1977144 is an abundant number, since it is smaller than the sum of its proper divisors (3346776).

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

1977144 is a wasteful number, since it uses less digits than its factorization.

1977144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359 (or 6355 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 1977144 is about 1406.1095263172. The cubic root of 1977144 is about 125.5103190935.

The spelling of 1977144 in words is "one million, nine hundred seventy-seven thousand, one hundred forty-four".