75448420 has 48 divisors (see below), whose sum is σ = 165892608. Its totient is φ = 28788480.

The previous prime is 75448409. The next prime is 75448421. The reversal of 75448420 is 2484457.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (75448421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44427 + ... + 46093.

It is an arithmetic number, because the mean of its divisors is an integer number (3456096).

Almost surely, 2^75448420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75448420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82946304).

75448420 is an abundant number, since it is smaller than the sum of its proper divisors (90444188).

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

75448420 is a wasteful number, since it uses less digits than its factorization.

75448420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1778 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 75448420 is about 8686.1049959116. The cubic root of 75448420 is about 422.5551344316. Note that the first 3 decimals are identical.

The spelling of 75448420 in words is "seventy-five million, four hundred forty-eight thousand, four hundred twenty".