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228471138479 = 7310330385841
BaseRepresentation
bin1101010011000111110…
…0001110100010101111
3210211201112202101010202
43110301330032202233
512220402102412404
6252542545224115
722335504430433
oct3246174164257
9724645671122
10228471138479
1188992001a11
123834263203b
1318710a2828c
14b0b54729c3
155e22c5221e
hex3531f0e8af

228471138479 has 8 divisors (see below), whose sum is σ = 233849440032. Its totient is φ = 223153608960.

The previous prime is 228471138449. The next prime is 228471138499. The reversal of 228471138479 is 974831174822.

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-228471138479 is a prime.

It is a super-2 number, since 2×2284711384792 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228471138449) 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, 15185402 + ... + 15200439.

It is an arithmetic number, because the mean of its divisors is an integer number (29231180004).

Almost surely, 2228471138479 is an apocalyptic number.

228471138479 is a deficient number, since it is larger than the sum of its proper divisors (5378301553).

228471138479 is a wasteful number, since it uses less digits than its factorization.

228471138479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30386017.

The product of its digits is 5419008, while the sum is 56.

The spelling of 228471138479 in words is "two hundred twenty-eight billion, four hundred seventy-one million, one hundred thirty-eight thousand, four hundred seventy-nine".

Divisors: 1 73 103 7519 30385841 2218166393 3129741623 228471138479