1451026240 has 56 divisors (see below), whose sum is σ = 3462723072. Its totient is φ = 579156480.

The previous prime is 1451026237. The next prime is 1451026249. The reversal of 1451026240 is 426201541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451026249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151185 + ... + 160495.

Almost surely, 2^1451026240 is an apocalyptic number.

1451026240 is a gapful number since it is divisible by the number (10) 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 1451026240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731361536).

1451026240 is an abundant number, since it is smaller than the sum of its proper divisors (2011696832).

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

1451026240 is an equidigital number, since it uses as much as digits as its factorization.

1451026240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815 (or 9805 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1451026240 is about 38092.3383372562. The cubic root of 1451026240 is about 1132.1181562041.

Adding to 1451026240 its reverse (426201541), we get a palindrome (1877227781).

The spelling of 1451026240 in words is "one billion, four hundred fifty-one million, twenty-six thousand, two hundred forty".