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1397272703 = 31223720149
BaseRepresentation
bin101001101001000…
…1011000001111111
310121101012210210212
41103102023001333
510330200211303
6350352223035
746424423231
oct12322130177
93541183725
101397272703
116577a6732
1232bb3aa7b
131936352a8
14d3802251
1582a06ad8
hex5348b07f

1397272703 has 8 divisors (see below), whose sum is σ = 1443062400. Its totient is φ = 1351527840.

The previous prime is 1397272691. The next prime is 1397272741. The reversal of 1397272703 is 3072727931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1397272703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397272753) 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, 59273 + ... + 79421.

It is an arithmetic number, because the mean of its divisors is an integer number (180382800).

Almost surely, 21397272703 is an apocalyptic number.

1397272703 is a deficient number, since it is larger than the sum of its proper divisors (45789697).

1397272703 is a wasteful number, since it uses less digits than its factorization.

1397272703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22417.

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 1397272703 is about 37380.1110619003. Note that the first 3 decimals coincide. The cubic root of 1397272703 is about 1117.9620420035.

The spelling of 1397272703 in words is "one billion, three hundred ninety-seven million, two hundred seventy-two thousand, seven hundred three".

Divisors: 1 31 2237 20149 69347 624619 45073313 1397272703