538343628 has 12 divisors (see below), whose sum is σ = 1256135160. Its totient is φ = 179447872.

The previous prime is 538343627. The next prime is 538343629. The reversal of 538343628 is 826343835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (538343627) and next prime (538343629).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 538343628.

It is not an unprimeable number, because it can be changed into a prime (538343621) 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, 22430973 + ... + 22430996.

It is an arithmetic number, because the mean of its divisors is an integer number (104677930).

Almost surely, 2^538343628 is an apocalyptic number.

It is an amenable number.

538343628 is an abundant number, since it is smaller than the sum of its proper divisors (717791532).

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

538343628 is a wasteful number, since it uses less digits than its factorization.

538343628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44861976 (or 44861974 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 538343628 is about 23202.2332545813. The cubic root of 538343628 is about 813.4918238272.

The spelling of 538343628 in words is "five hundred thirty-eight million, three hundred forty-three thousand, six hundred twenty-eight".