1172424220 has 48 divisors (see below), whose sum is σ = 2688338016. Its totient is φ = 425952000.

The previous prime is 1172424181. The next prime is 1172424251. The reversal of 1172424220 is 224242711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381490 + ... + 384550.

It is an arithmetic number, because the mean of its divisors is an integer number (56007042).

Almost surely, 2^1172424220 is an apocalyptic number.

1172424220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172424220 is an abundant number, since it is smaller than the sum of its proper divisors (1515913796).

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

1172424220 is a wasteful number, since it uses less digits than its factorization.

1172424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 1172424220 is about 34240.6807759425. The cubic root of 1172424220 is about 1054.4555099348.

Adding to 1172424220 its reverse (224242711), we get a palindrome (1396666931).

The spelling of 1172424220 in words is "one billion, one hundred seventy-two million, four hundred twenty-four thousand, two hundred twenty".