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80495142 = 23721321061
BaseRepresentation
bin1001100110001…
…00001000100110
312121110120120120
410303010020212
5131101321032
611553142410
71665124500
oct463041046
9177416516
1080495142
114148a212
1222b5aa06
13138a4880
14a994d70
15710062c
hex4cc4226

80495142 has 48 divisors (see below), whose sum is σ = 201689712. Its totient is φ = 21228480.

The previous prime is 80495131. The next prime is 80495171. The reversal of 80495142 is 24159408.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6709 + ... + 14352.

It is an arithmetic number, because the mean of its divisors is an integer number (4201869).

Almost surely, 280495142 is an apocalyptic number.

80495142 is an abundant number, since it is smaller than the sum of its proper divisors (121194570).

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

80495142 is a wasteful number, since it uses less digits than its factorization.

80495142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21093 (or 21086 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 80495142 is about 8971.9084926230. The cubic root of 80495142 is about 431.7740695333.

The spelling of 80495142 in words is "eighty million, four hundred ninety-five thousand, one hundred forty-two".

Divisors: 1 2 3 6 7 13 14 21 26 39 42 49 78 91 98 147 182 273 294 546 637 1274 1911 3822 21061 42122 63183 126366 147427 273793 294854 442281 547586 821379 884562 1031989 1642758 1916551 2063978 3095967 3833102 5749653 6191934 11499306 13415857 26831714 40247571 80495142