2451420720 has 320 divisors, whose sum is σ = 9710807040. Its totient is φ = 556803072.

The previous prime is 2451420667. The next prime is 2451420731. The reversal of 2451420720 is 270241542.

2451420720 is a `hidden beast` number, since 2 + 451 + 4 + 207 + 2 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2978229 + ... + 2979051.

It is an arithmetic number, because the mean of its divisors is an integer number (30346272).

Almost surely, 2^2451420720 is an apocalyptic number.

2451420720 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 2451420720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4855403520).

2451420720 is an abundant number, since it is smaller than the sum of its proper divisors (7259386320).

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

2451420720 is a wasteful number, since it uses less digits than its factorization.

2451420720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 2451420720 is about 49511.8240423437. The cubic root of 2451420720 is about 1348.3602807972.

The spelling of 2451420720 in words is "two billion, four hundred fifty-one million, four hundred twenty thousand, seven hundred twenty".