1299072 has 64 divisors (see below), whose sum is σ = 3672000. Its totient is φ = 405504.

The previous prime is 1299061. The next prime is 1299079. The reversal of 1299072 is 2709921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1299072² = 3375176122368, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1299079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6429 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (57375).

2^1299072 is an apocalyptic number.

1299072 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 1299072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836000).

1299072 is an abundant number, since it is smaller than the sum of its proper divisors (2372928).

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

1299072 is a wasteful number, since it uses less digits than its factorization.

1299072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1299072 is about 1139.7683975264. The cubic root of 1299072 is about 109.1133125705.

The spelling of 1299072 in words is "one million, two hundred ninety-nine thousand, seventy-two".