2389973040 has 720 divisors, whose sum is σ = 10481391648. Its totient is φ = 501645312.

The previous prime is 2389973021. The next prime is 2389973057. The reversal of 2389973040 is 403799832.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×2389973040² = 11423942263853683200, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12383184 + ... + 12383376.

Almost surely, 2^2389973040 is an apocalyptic number.

2389973040 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 2389973040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5240695824).

2389973040 is an abundant number, since it is smaller than the sum of its proper divisors (8091418608).

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

2389973040 is a wasteful number, since it uses less digits than its factorization.

2389973040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 2389973040 is about 48887.3505111496. The cubic root of 2389973040 is about 1336.9987482057.

The spelling of 2389973040 in words is "two billion, three hundred eighty-nine million, nine hundred seventy-three thousand, forty".