228691763420 has 24 divisors (see below), whose sum is σ = 482528791248. Its totient is φ = 91043164800.

The previous prime is 228691763401. The next prime is 228691763423. The reversal of 228691763420 is 24367196822.

It is a super-2 number, since 2×228691763420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228691763423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27091961 + ... + 27100400.

It is an arithmetic number, because the mean of its divisors is an integer number (20105366302).

Almost surely, 2^228691763420 is an apocalyptic number.

228691763420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228691763420 is an abundant number, since it is smaller than the sum of its proper divisors (253837027828).

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

228691763420 is a wasteful number, since it uses less digits than its factorization.

228691763420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54192581 (or 54192579 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 228691763420 in words is "two hundred twenty-eight billion, six hundred ninety-one million, seven hundred sixty-three thousand, four hundred twenty".