1389274224 has 160 divisors (see below), whose sum is σ = 4179732480. Its totient is φ = 393901056.

The previous prime is 1389274223. The next prime is 1389274259. The reversal of 1389274224 is 4224729831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389274223) 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, 437089 + ... + 440255.

It is an arithmetic number, because the mean of its divisors is an integer number (26123328).

Almost surely, 2^1389274224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389274224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089866240).

1389274224 is an abundant number, since it is smaller than the sum of its proper divisors (2790458256).

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

1389274224 is a wasteful number, since it uses less digits than its factorization.

1389274224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247 (or 3241 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1389274224 is about 37272.9690794817. The cubic root of 1389274224 is about 1115.8247563375.

The spelling of 1389274224 in words is "one billion, three hundred eighty-nine million, two hundred seventy-four thousand, two hundred twenty-four".