1273856 has 26 divisors (see below), whose sum is σ = 2555592. Its totient is φ = 634880.

The previous prime is 1273843. The next prime is 1273879. The reversal of 1273856 is 6583721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 3941 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (98292).

2^1273856 is an apocalyptic number.

1273856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277796).

1273856 is an abundant number, since it is smaller than the sum of its proper divisors (1281736).

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

1273856 is an frugal number, since it uses more digits than its factorization.

1273856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 313 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1273856 is about 1128.6522936671. The cubic root of 1273856 is about 108.4027032364.

The spelling of 1273856 in words is "one million, two hundred seventy-three thousand, eight hundred fifty-six".