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80431264 = 252513477
BaseRepresentation
bin1001100101101…
…00100010100000
312121100022221201
410302310202200
5131042300024
611551530544
71664440324
oct462644240
9177308851
1080431264
1141446221
1222b29a54
1313881784
14a979984
1570db744
hex4cb48a0

80431264 has 12 divisors (see below), whose sum is σ = 158349114. Its totient is φ = 40215616.

The previous prime is 80431261. The next prime is 80431277. The reversal of 80431264 is 46213408.

It can be written as a sum of positive squares in only one way, i.e., 62283664 + 18147600 = 7892^2 + 4260^2 .

It is not an unprimeable number, because it can be changed into a prime (80431261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256707 + ... + 1256770.

Almost surely, 280431264 is an apocalyptic number.

It is an amenable number.

80431264 is a deficient number, since it is larger than the sum of its proper divisors (77917850).

80431264 is a wasteful number, since it uses less digits than its factorization.

80431264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513487 (or 2513479 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 80431264 is about 8968.3478969094. The cubic root of 80431264 is about 431.6598259394.

The spelling of 80431264 in words is "eighty million, four hundred thirty-one thousand, two hundred sixty-four".

Divisors: 1 2 4 8 16 32 2513477 5026954 10053908 20107816 40215632 80431264