1145472 has 64 divisors (see below), whose sum is σ = 3223200. Its totient is φ = 359424.

The previous prime is 1145461. The next prime is 1145479. The reversal of 1145472 is 2745411.

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

It is a super-2 number, since 2×1145472² = 2624212205568, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1145479) 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, 7218 + ... + 7374.

2^1145472 is an apocalyptic number.

1145472 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 1145472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611600).

1145472 is an abundant number, since it is smaller than the sum of its proper divisors (2077728).

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

1145472 is a wasteful number, since it uses less digits than its factorization.

1145472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 181 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 1145472 is about 1070.2672563430. The cubic root of 1145472 is about 104.6312689925.

The spelling of 1145472 in words is "one million, one hundred forty-five thousand, four hundred seventy-two".