2445570720 has 72 divisors (see below), whose sum is σ = 8345514996. Its totient is φ = 652151808.

The previous prime is 2445570719. The next prime is 2445570733. The reversal of 2445570720 is 270755442.

It is a happy number.

2445570720 is a `hidden beast` number, since 24 + 45 + 570 + 7 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2393557776 + 52012944 = 48924^2 + 7212^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×2445570720² = 11961632293042636800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 847717 + ... + 850596.

Almost surely, 2^2445570720 is an apocalyptic number.

2445570720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2445570720 is an abundant number, since it is smaller than the sum of its proper divisors (5899944276).

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

2445570720 is a wasteful number, since it uses less digits than its factorization.

2445570720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698334 (or 1698323 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 2445570720 is about 49452.7119579907. The cubic root of 2445570720 is about 1347.2868637371.

The spelling of 2445570720 in words is "two billion, four hundred forty-five million, five hundred seventy thousand, seven hundred twenty".