228363147508772 has 6 divisors (see below), whose sum is σ = 399635508140358. Its totient is φ = 114181573754384.

The previous prime is 228363147508759. The next prime is 228363147508807. The reversal of 228363147508772 is 277805741363822.

It is a happy number.

228363147508772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 202918144664356 + 25445002844416 = 14244934^2 + 5044304^2 .

It is a super-2 number, since 2×228363147508772² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228363147508699 and 228363147508708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28545393438593 + ... + 28545393438600.

It is an arithmetic number, because the mean of its divisors is an integer number (66605918023393).

Almost surely, 2^{228363147508772} is an apocalyptic number.

It is an amenable number.

228363147508772 is a deficient number, since it is larger than the sum of its proper divisors (171272360631586).

228363147508772 is a wasteful number, since it uses less digits than its factorization.

228363147508772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57090786877197 (or 57090786877195 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 65.

The spelling of 228363147508772 in words is "two hundred twenty-eight trillion, three hundred sixty-three billion, one hundred forty-seven million, five hundred eight thousand, seven hundred seventy-two".