1229472 has 48 divisors (see below), whose sum is σ = 3588480. Its totient is φ = 409536.

The previous prime is 1229461. The next prime is 1229483. The reversal of 1229472 is 2749221.

It is an interprime number because it is at equal distance from previous prime (1229461) and next prime (1229483).

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (74760).

2^1229472 is an apocalyptic number.

1229472 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 1229472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794240).

1229472 is an abundant number, since it is smaller than the sum of its proper divisors (2359008).

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

1229472 is a wasteful number, since it uses less digits than its factorization.

1229472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1428 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1229472 is about 1108.8155843061. The cubic root of 1229472 is about 107.1287935827.

The spelling of 1229472 in words is "one million, two hundred twenty-nine thousand, four hundred seventy-two".