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16157071 = 710122853
BaseRepresentation
bin111101101000…
…100110001111
31010101212100001
4331220212033
513114011241
61334145131
7254222110
oct75504617
933355301
1016157071
119136057
1254b21a7
1334691c8
142208207
151642431
hexf6898f

16157071 has 8 divisors (see below), whose sum is σ = 18648864. Its totient is φ = 13711200.

The previous prime is 16157069. The next prime is 16157081. The reversal of 16157071 is 17075161.

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

It is a cyclic number.

It is not a de Polignac number, because 16157071 - 21 = 16157069 is a prime.

It is a super-2 number, since 2×161570712 = 522101886598082, which 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 (16157041) 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, 10720 + ... + 12133.

It is an arithmetic number, because the mean of its divisors is an integer number (2331108).

Almost surely, 216157071 is an apocalyptic number.

16157071 is a deficient number, since it is larger than the sum of its proper divisors (2491793).

16157071 is a wasteful number, since it uses less digits than its factorization.

16157071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22961.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 16157071 is about 4019.5859239479. The cubic root of 16157071 is about 252.8060974251.

The spelling of 16157071 in words is "sixteen million, one hundred fifty-seven thousand, seventy-one".

Divisors: 1 7 101 707 22853 159971 2308153 16157071