2389782528 has 390 divisors, whose sum is σ = 8351248724. Its totient is φ = 682795008.

The previous prime is 2389782517. The next prime is 2389782533. The reversal of 2389782528 is 8252879832.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

2389782528 is a `hidden beast` number, since 2 + 38 + 9 + 7 + 82 + 528 = 666.

It is a super-2 number, since 2×2389782528² = 11422121062268141568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3870720) is a multiple of the sum of its prime divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 341397501 + ... + 341397507.

Almost surely, 2^2389782528 is an apocalyptic number.

2389782528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2389782528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4175624362).

2389782528 is an abundant number, since it is smaller than the sum of its proper divisors (5961466196).

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

2389782528 is an frugal number, since it uses more digits than its factorization.

2389782528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 12 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 2389782528 is about 48885.4019928240. The cubic root of 2389782528 is about 1336.9632218532.

The spelling of 2389782528 in words is "two billion, three hundred eighty-nine million, seven hundred eighty-two thousand, five hundred twenty-eight".