1249776 has 80 divisors (see below), whose sum is σ = 3928320. Its totient is φ = 377280.

The previous prime is 1249757. The next prime is 1249799. The reversal of 1249776 is 6779421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1249776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4621 + ... + 4883.

It is an arithmetic number, because the mean of its divisors is an integer number (49104).

2^1249776 is an apocalyptic number.

1249776 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 1249776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964160).

1249776 is an abundant number, since it is smaller than the sum of its proper divisors (2678544).

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

1249776 is a wasteful number, since it uses less digits than its factorization.

1249776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 279 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 1249776 is about 1117.9338084162. The cubic root of 1249776 is about 107.7152995389.

1249776 divided by its sum of digits (36) gives a triangular number (34716 = T₂₆₃).

It can be divided in two parts, 1249 and 776, that added together give a square (2025 = 45²).

The spelling of 1249776 in words is "one million, two hundred forty-nine thousand, seven hundred seventy-six".