7500172420 has 48 divisors (see below), whose sum is σ = 16997621760. Its totient is φ = 2763467136.

The previous prime is 7500172399. The next prime is 7500172429. The reversal of 7500172420 is 242710057.

It is not an unprimeable number, because it can be changed into a prime (7500172429) 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, 94429 + ... + 154651.

It is an arithmetic number, because the mean of its divisors is an integer number (354117120).

Almost surely, 2^7500172420 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 7500172420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8498810880).

7500172420 is an abundant number, since it is smaller than the sum of its proper divisors (9497449340).

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

7500172420 is a wasteful number, since it uses less digits than its factorization.

7500172420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60724 (or 60722 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 7500172420 is about 86603.5358400568. The cubic root of 7500172420 is about 1957.4488205023.

Adding to 7500172420 its reverse (242710057), we get a palindrome (7742882477).

The spelling of 7500172420 in words is "seven billion, five hundred million, one hundred seventy-two thousand, four hundred twenty".