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1207629380 = 225531139273
BaseRepresentation
bin100011111111010…
…1111011001000100
310010011100221002002
41013332233121010
54433123120010
6315455404432
741632452236
oct10776573104
93104327062
101207629380
1156a747911
12298523718
13163265cc9
14b6558256
15710461a5
hex47faf644

1207629380 has 24 divisors (see below), whose sum is σ = 2583873432. Its totient is φ = 473937152.

The previous prime is 1207629377. The next prime is 1207629389. The reversal of 1207629380 is 839267021.

It can be written as a sum of positive squares in 4 ways, for example, as 624600064 + 583029316 = 24992^2 + 24146^2 .

It is not an unprimeable number, because it can be changed into a prime (1207629389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568577 + ... + 570696.

It is an arithmetic number, because the mean of its divisors is an integer number (107661393).

Almost surely, 21207629380 is an apocalyptic number.

1207629380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1207629380 is an abundant number, since it is smaller than the sum of its proper divisors (1376244052).

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

1207629380 is a wasteful number, since it uses less digits than its factorization.

1207629380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139335 (or 1139333 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1207629380 is about 34750.9622888345. The cubic root of 1207629380 is about 1064.9058760226.

The spelling of 1207629380 in words is "one billion, two hundred seven million, six hundred twenty-nine thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 1139273 2278546 4557092 5696365 11392730 22785460 60381469 120762938 241525876 301907345 603814690 1207629380