2389254840 has 512 divisors, whose sum is σ = 9517824000. Its totient is φ = 521883648.

The previous prime is 2389254839. The next prime is 2389254841. The reversal of 2389254840 is 484529832.

2389254840 is a `hidden beast` number, since 23 + 89 + 2 + 548 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2389254839) and next prime (2389254841).

It is a super-3 number, since 3×2389254840³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389254841) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26845516 + ... + 26845604.

It is an arithmetic number, because the mean of its divisors is an integer number (18589500).

Almost surely, 2^2389254840 is an apocalyptic number.

2389254840 is a gapful number since it is divisible by the number (20) 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 2389254840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4758912000).

2389254840 is an abundant number, since it is smaller than the sum of its proper divisors (7128569160).

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

2389254840 is a wasteful number, since it uses less digits than its factorization.

2389254840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 2389254840 is about 48880.0045008181. The cubic root of 2389254840 is about 1336.8648096373.

The spelling of 2389254840 in words is "two billion, three hundred eighty-nine million, two hundred fifty-four thousand, eight hundred forty".