2452157240 has 128 divisors (see below), whose sum is σ = 6139748160. Its totient is φ = 875556864.

The previous prime is 2452157237. The next prime is 2452157243. The reversal of 2452157240 is 427512542.

It is an interprime number because it is at equal distance from previous prime (2452157237) and next prime (2452157243).

It is a junction number, because it is equal to n+sod(n) for n = 2452157197 and 2452157206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2452157243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4482647 + ... + 4483193.

Almost surely, 2^2452157240 is an apocalyptic number.

2452157240 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 2452157240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3069874080).

2452157240 is an abundant number, since it is smaller than the sum of its proper divisors (3687590920).

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

2452157240 is a wasteful number, since it uses less digits than its factorization.

2452157240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 2452157240 is about 49519.2613030526. The cubic root of 2452157240 is about 1348.4953038426.

Adding to 2452157240 its reverse (427512542), we get a palindrome (2879669782).

The spelling of 2452157240 in words is "two billion, four hundred fifty-two million, one hundred fifty-seven thousand, two hundred forty".