75344420 has 12 divisors (see below), whose sum is σ = 158223324. Its totient is φ = 30137760.

The previous prime is 75344417. The next prime is 75344447. The reversal of 75344420 is 2444357.

It can be written as a sum of positive squares in 2 ways, for example, as 21086464 + 54257956 = 4592^2 + 7366^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883591 + ... + 1883630.

It is an arithmetic number, because the mean of its divisors is an integer number (13185277).

Almost surely, 2^75344420 is an apocalyptic number.

It is an amenable number.

75344420 is an abundant number, since it is smaller than the sum of its proper divisors (82878904).

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

75344420 is a wasteful number, since it uses less digits than its factorization.

75344420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767230 (or 3767228 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 75344420 is about 8680.1163586671. The cubic root of 75344420 is about 422.3608916123.

Adding to 75344420 its reverse (2444357), we get a palindrome (77788777).

The spelling of 75344420 in words is "seventy-five million, three hundred forty-four thousand, four hundred twenty".