43144420 has 24 divisors (see below), whose sum is σ = 98840448. Its totient is φ = 15688800.

The previous prime is 43144411. The next prime is 43144429. The reversal of 43144420 is 2444134.

It is an interprime number because it is at equal distance from previous prime (43144411) and next prime (43144429).

It is a super-2 number, since 2×43144420² = 3722881954272800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 43144391 and 43144400.

It is not an unprimeable number, because it can be changed into a prime (43144429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97836 + ... + 98275.

It is an arithmetic number, because the mean of its divisors is an integer number (4118352).

Almost surely, 2^43144420 is an apocalyptic number.

It is an amenable number.

43144420 is an abundant number, since it is smaller than the sum of its proper divisors (55696028).

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

43144420 is a wasteful number, since it uses less digits than its factorization.

43144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196131 (or 196129 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 43144420 is about 6568.4412153874. The cubic root of 43144420 is about 350.7315853889.

Adding to 43144420 its reverse (2444134), we get a palindrome (45588554).

The spelling of 43144420 in words is "forty-three million, one hundred forty-four thousand, four hundred twenty".