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2470868240 = 24530885853
BaseRepresentation
bin1001001101000110…
…0111010100010000
320101012101010000112
42103101213110100
520030020240430
61045103140452
7115142014331
oct22321472420
96335333015
102470868240
111058816975
1258b5a4728
13304b9c719
1419622a288
15e6dc4195
hex93467510

2470868240 has 20 divisors (see below), whose sum is σ = 5744768844. Its totient is φ = 988347264.

The previous prime is 2470868233. The next prime is 2470868249. The reversal of 2470868240 is 428680742.

It can be written as a sum of positive squares in 2 ways, for example, as 757570576 + 1713297664 = 27524^2 + 41392^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×24708682402 = 12210379718881395200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2470868249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15442847 + ... + 15443006.

Almost surely, 22470868240 is an apocalyptic number.

2470868240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2470868240 is an abundant number, since it is smaller than the sum of its proper divisors (3273900604).

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

2470868240 is a wasteful number, since it uses less digits than its factorization.

2470868240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30885866 (or 30885860 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 2470868240 is about 49707.8287596632. The cubic root of 2470868240 is about 1351.9164806080.

The spelling of 2470868240 in words is "two billion, four hundred seventy million, eight hundred sixty-eight thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 30885853 61771706 123543412 154429265 247086824 308858530 494173648 617717060 1235434120 2470868240