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80488865 = 531519283
BaseRepresentation
bin1001100110000…
…10100110100001
312121110020222002
410303002212201
5131101120430
611553053345
71665100262
oct463024641
9177406862
1080488865
1141485526
1222b57255
13138a1a62
14a992969
1570ed845
hex4cc29a1

80488865 has 8 divisors (see below), whose sum is σ = 99702528. Its totient is φ = 62313840.

The previous prime is 80488847. The next prime is 80488867. The reversal of 80488865 is 56888408.

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

It is not a de Polignac number, because 80488865 - 220 = 79440289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80488867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259487 + ... + 259796.

It is an arithmetic number, because the mean of its divisors is an integer number (12462816).

Almost surely, 280488865 is an apocalyptic number.

It is an amenable number.

80488865 is a deficient number, since it is larger than the sum of its proper divisors (19213663).

80488865 is a wasteful number, since it uses less digits than its factorization.

80488865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519319.

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 80488865 is about 8971.5586717136. The cubic root of 80488865 is about 431.7628460142.

The spelling of 80488865 in words is "eighty million, four hundred eighty-eight thousand, eight hundred sixty-five".

Divisors: 1 5 31 155 519283 2596415 16097773 80488865