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80071444 = 2257734693
BaseRepresentation
bin1001100010111…
…00101100010100
312120200001101001
410301130230110
5130444241234
611540113044
71661411305
oct461345424
9176601331
1080071444
114121a952
1222995784
1313786a6b
14a8c47ac
157069d14
hex4c5cb14

80071444 has 12 divisors (see below), whose sum is σ = 140371924. Its totient is φ = 39965184.

The previous prime is 80071429. The next prime is 80071451. The reversal of 80071444 is 44417008.

It can be written as a sum of positive squares in 2 ways, for example, as 70224400 + 9847044 = 8380^2 + 3138^2 .

It is a super-2 number, since 2×800714442 = 12822872288490272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15039 + ... + 19654.

Almost surely, 280071444 is an apocalyptic number.

It is an amenable number.

80071444 is a deficient number, since it is larger than the sum of its proper divisors (60300480).

80071444 is a wasteful number, since it uses less digits than its factorization.

80071444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35274 (or 35272 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 80071444 is about 8948.2648597368. The cubic root of 80071444 is about 431.0151677021.

The spelling of 80071444 in words is "eighty million, seventy-one thousand, four hundred forty-four".

Divisors: 1 2 4 577 1154 2308 34693 69386 138772 20017861 40035722 80071444