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1213008480 = 253351783199
BaseRepresentation
bin100100001001101…
…0000101001100000
310010112111012211000
41020103100221200
54441012232410
6320210552000
742026254605
oct11023205140
93115435730
101213008480
11572791252
1229a298600
131643ca4c8
14b71586ac
1571759dc0
hex484d0a60

1213008480 has 384 divisors, whose sum is σ = 4572288000. Its totient is φ = 299261952.

The previous prime is 1213008479. The next prime is 1213008487. The reversal of 1213008480 is 848003121.

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 (1213008487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6095421 + ... + 6095619.

It is an arithmetic number, because the mean of its divisors is an integer number (11907000).

Almost surely, 21213008480 is an apocalyptic number.

1213008480 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 1213008480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144000).

1213008480 is an abundant number, since it is smaller than the sum of its proper divisors (3359279520).

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

1213008480 is a wasteful number, since it uses less digits than its factorization.

1213008480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1213008480 is about 34828.2712749284. The cubic root of 1213008480 is about 1066.4846581812.

The spelling of 1213008480 in words is "one billion, two hundred thirteen million, eight thousand, four hundred eighty".