1278072 has 64 divisors (see below), whose sum is σ = 3645600. Its totient is φ = 414720.

The previous prime is 1278047. The next prime is 1278097. The reversal of 1278072 is 2708721.

It is an interprime number because it is at equal distance from previous prime (1278047) and next prime (1278097).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 6.

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, 13128 + ... + 13224.

2^1278072 is an apocalyptic number.

1278072 is a gapful number since it is divisible by the number (12) 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 1278072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1822800).

1278072 is an abundant number, since it is smaller than the sum of its proper divisors (2367528).

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

1278072 is a wasteful number, since it uses less digits than its factorization.

1278072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1278072 is about 1130.5184651300. The cubic root of 1278072 is about 108.5221627162.

The spelling of 1278072 in words is "one million, two hundred seventy-eight thousand, seventy-two".