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80127957 = 3713292349
BaseRepresentation
bin1001100011010…
…10011111010101
312120202220220010
410301222133111
5131003043312
611541230433
71662035130
oct461523725
9176686803
1080127957
1141259358
1222a02419
13137a66c0
14a8db217
15707b93c
hex4c6a7d5

80127957 has 48 divisors (see below), whose sum is σ = 136572800. Its totient is φ = 40690944.

The previous prime is 80127941. The next prime is 80127967. The reversal of 80127957 is 75972108.

It is not a de Polignac number, because 80127957 - 24 = 80127941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80127907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229419 + ... + 229767.

Almost surely, 280127957 is an apocalyptic number.

80127957 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

80127957 is a deficient number, since it is larger than the sum of its proper divisors (56444843).

80127957 is a wasteful number, since it uses less digits than its factorization.

80127957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 80127957 is about 8951.4220657949. The cubic root of 80127957 is about 431.1165448004.

It can be divided in two parts, 801279 and 57, that multiplied together give a triangular number (45672903 = T9557).

The spelling of 80127957 in words is "eighty million, one hundred twenty-seven thousand, nine hundred fifty-seven".

Divisors: 1 3 7 13 21 29 39 87 91 203 273 349 377 609 841 1047 1131 2443 2523 2639 4537 5887 7329 7917 10121 10933 13611 17661 30363 31759 32799 70847 76531 95277 131573 212541 229593 293509 394719 880527 921011 2054563 2763033 3815617 6163689 11446851 26709319 80127957