1977268 has 6 divisors (see below), whose sum is σ = 3460226. Its totient is φ = 988632.

The previous prime is 1977259. The next prime is 1977301. The reversal of 1977268 is 8627791.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 11664 = 1402^2 + 108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1977268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247155 + ... + 247162.

2^1977268 is an apocalyptic number.

It is an amenable number.

1977268 is a deficient number, since it is larger than the sum of its proper divisors (1482958).

1977268 is a wasteful number, since it uses less digits than its factorization.

1977268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494321 (or 494319 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 1977268 is about 1406.1536189194. The cubic root of 1977268 is about 125.5129429041.

The spelling of 1977268 in words is "one million, nine hundred seventy-seven thousand, two hundred sixty-eight".