2458038640 has 20 divisors (see below), whose sum is σ = 5714940024. Its totient is φ = 983215424.

The previous prime is 2458038623. The next prime is 2458038641. The reversal of 2458038640 is 468308542.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2458038593 and 2458038602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2458038641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15362662 + ... + 15362821.

Almost surely, 2^2458038640 is an apocalyptic number.

2458038640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2458038640 is an abundant number, since it is smaller than the sum of its proper divisors (3256901384).

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

2458038640 is a wasteful number, since it uses less digits than its factorization.

2458038640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725496 (or 30725490 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 2458038640 is about 49578.6107106684. The cubic root of 2458038640 is about 1349.5725468821.

The spelling of 2458038640 in words is "two billion, four hundred fifty-eight million, thirty-eight thousand, six hundred forty".