1138424220 has 60 divisors (see below), whose sum is σ = 3571284024. Its totient is φ = 303579360.

The previous prime is 1138424213. The next prime is 1138424233. The reversal of 1138424220 is 224248311.

1138424220 is a `hidden beast` number, since 1 + 13 + 8 + 424 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 349746 + ... + 352985.

Almost surely, 2^1138424220 is an apocalyptic number.

1138424220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138424220 is an abundant number, since it is smaller than the sum of its proper divisors (2432859804).

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

1138424220 is a wasteful number, since it uses less digits than its factorization.

1138424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702752 (or 702741 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1138424220 is about 33740.5426749482. The cubic root of 1138424220 is about 1044.1623806085.

The spelling of 1138424220 in words is "one billion, one hundred thirty-eight million, four hundred twenty-four thousand, two hundred twenty".