228438029652 has 96 divisors (see below), whose sum is σ = 655575540480. Its totient is φ = 60421662720.

The previous prime is 228438029597. The next prime is 228438029657. The reversal of 228438029652 is 256920834822.

228438029652 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228438029652² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 228438029595 and 228438029604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228438029657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1224127 + ... + 1398342.

It is an arithmetic number, because the mean of its divisors is an integer number (6828911880).

Almost surely, 2^228438029652 is an apocalyptic number.

It is an amenable number.

228438029652 is an abundant number, since it is smaller than the sum of its proper divisors (427137510828).

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

228438029652 is a wasteful number, since it uses less digits than its factorization.

228438029652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622561 (or 2622559 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 228438029652 in words is "two hundred twenty-eight billion, four hundred thirty-eight million, twenty-nine thousand, six hundred fifty-two".