1451207340 has 480 divisors, whose sum is σ = 5339271168. Its totient is φ = 326592000.

The previous prime is 1451207339. The next prime is 1451207347. The reversal of 1451207340 is 437021541.

1451207340 is a `hidden beast` number, since 1 + 451 + 207 + 3 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451207347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 20439505 + ... + 20439575.

Almost surely, 2^1451207340 is an apocalyptic number.

1451207340 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 1451207340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2669635584).

1451207340 is an abundant number, since it is smaller than the sum of its proper divisors (3888063828).

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

1451207340 is a wasteful number, since it uses less digits than its factorization.

1451207340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1451207340 is about 38094.7153815329. The cubic root of 1451207340 is about 1132.1652534615.

Adding to 1451207340 its reverse (437021541), we get a palindrome (1888228881).

The spelling of 1451207340 in words is "one billion, four hundred fifty-one million, two hundred seven thousand, three hundred forty".