289621240380 has 72 divisors (see below), whose sum is σ = 878590566672. Its totient is φ = 77225930496.

The previous prime is 289621240357. The next prime is 289621240387. The reversal of 289621240380 is 83042126982.

289621240380 is a `hidden beast` number, since 2 + 8 + 9 + 6 + 21 + 240 + 380 = 666.

289621240380 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289621240387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2355099 + ... + 2475021.

Almost surely, 2^289621240380 is an apocalyptic number.

289621240380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289621240380 is an abundant number, since it is smaller than the sum of its proper divisors (588969326292).

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

289621240380 is a wasteful number, since it uses less digits than its factorization.

289621240380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133355 (or 133350 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 289621240380 in words is "two hundred eighty-nine billion, six hundred twenty-one million, two hundred forty thousand, three hundred eighty".