1440672 has 48 divisors (see below), whose sum is σ = 3880800. Its totient is φ = 467712.

The previous prime is 1440641. The next prime is 1440679. The reversal of 1440672 is 2760441.

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

It is a super-3 number, since 3×1440672³ = 8970498986239033344, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1440679) 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, 3954 + ... + 4302.

It is an arithmetic number, because the mean of its divisors is an integer number (80850).

2^1440672 is an apocalyptic number.

1440672 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 1440672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940400).

1440672 is an abundant number, since it is smaller than the sum of its proper divisors (2440128).

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

1440672 is a wasteful number, since it uses less digits than its factorization.

1440672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1440672 is about 1200.2799673410. The cubic root of 1440672 is about 112.9418867398.

It can be divided in two parts, 1440 and 672, that added together give a palindrome (2112).

The spelling of 1440672 in words is "one million, four hundred forty thousand, six hundred seventy-two".