389748240 has 320 divisors, whose sum is σ = 1553472000. Its totient is φ = 87975936.

The previous prime is 389748217. The next prime is 389748257. The reversal of 389748240 is 42847983.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2252794 + ... + 2252966.

It is an arithmetic number, because the mean of its divisors is an integer number (4854600).

Almost surely, 2^389748240 is an apocalyptic number.

389748240 is a gapful number since it is divisible by the number (30) 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 389748240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776736000).

389748240 is an abundant number, since it is smaller than the sum of its proper divisors (1163723760).

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

389748240 is a wasteful number, since it uses less digits than its factorization.

389748240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 389748240 is about 19742.0424475281. The cubic root of 389748240 is about 730.4571103423.

The spelling of 389748240 in words is "three hundred eighty-nine million, seven hundred forty-eight thousand, two hundred forty".