1172894420 has 12 divisors (see below), whose sum is σ = 2463078324. Its totient is φ = 469157760.

The previous prime is 1172894419. The next prime is 1172894423. The reversal of 1172894420 is 244982711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 127148176 + 1045746244 = 11276^2 + 32338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172894423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29322341 + ... + 29322380.

It is an arithmetic number, because the mean of its divisors is an integer number (205256527).

Almost surely, 2^1172894420 is an apocalyptic number.

1172894420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172894420 is an abundant number, since it is smaller than the sum of its proper divisors (1290183904).

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

1172894420 is a wasteful number, since it uses less digits than its factorization.

1172894420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58644730 (or 58644728 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1172894420 is about 34247.5461894717. The cubic root of 1172894420 is about 1054.5964540022.

The spelling of 1172894420 in words is "one billion, one hundred seventy-two million, eight hundred ninety-four thousand, four hundred twenty".