1238551028 has 48 divisors (see below), whose sum is σ = 2565984960. Its totient is φ = 515673600.

The previous prime is 1238551007. The next prime is 1238551037. The reversal of 1238551028 is 8201558321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66668 + ... + 83196.

It is an arithmetic number, because the mean of its divisors is an integer number (53458020).

Almost surely, 2^1238551028 is an apocalyptic number.

It is an amenable number.

1238551028 is an abundant number, since it is smaller than the sum of its proper divisors (1327433932).

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

1238551028 is a wasteful number, since it uses less digits than its factorization.

With its successor (1238551029) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (16686).

With its successor (1238551029) it forms an eRAP, since the sums of their prime factors are consecutive (16688 and 16689).

1238551028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16688 (or 16686 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1238551028 is about 35193.0536896132. The cubic root of 1238551028 is about 1073.9184443572.

The spelling of 1238551028 in words is "one billion, two hundred thirty-eight million, five hundred fifty-one thousand, twenty-eight".