1128038420 has 12 divisors (see below), whose sum is σ = 2368880724. Its totient is φ = 451215360.

The previous prime is 1128038419. The next prime is 1128038437. The reversal of 1128038420 is 248308211.

It can be written as a sum of positive squares in 2 ways, for example, as 274697476 + 853340944 = 16574^2 + 29212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28200941 + ... + 28200980.

It is an arithmetic number, because the mean of its divisors is an integer number (197406727).

Almost surely, 2^1128038420 is an apocalyptic number.

1128038420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128038420 is an abundant number, since it is smaller than the sum of its proper divisors (1240842304).

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

1128038420 is a wasteful number, since it uses less digits than its factorization.

1128038420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56401930 (or 56401928 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1128038420 is about 33586.2832120495. The cubic root of 1128038420 is about 1040.9773910722.

The spelling of 1128038420 in words is "one billion, one hundred twenty-eight million, thirty-eight thousand, four hundred twenty".