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80461421 = 377927527
BaseRepresentation
bin1001100101110…
…11111001101101
312121101212022122
410302323321231
5131044231141
611552322325
71664624255
oct462737155
9177355278
1080461421
1141466947
1222b433a5
1313892411
14a986965
1570e564b
hex4cbbe6d

80461421 has 8 divisors (see below), whose sum is σ = 83685120. Its totient is φ = 77293008.

The previous prime is 80461411. The next prime is 80461453. The reversal of 80461421 is 12416408.

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

It is a cyclic number.

It is not a de Polignac number, because 80461421 - 218 = 80199277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80461411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10841 + ... + 16686.

It is an arithmetic number, because the mean of its divisors is an integer number (10460640).

Almost surely, 280461421 is an apocalyptic number.

It is an amenable number.

80461421 is a deficient number, since it is larger than the sum of its proper divisors (3223699).

80461421 is a wasteful number, since it uses less digits than its factorization.

80461421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27643.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 80461421 is about 8970.0290412016. The cubic root of 80461421 is about 431.7137682255.

Adding to 80461421 its reverse (12416408), we get a palindrome (92877829).

The spelling of 80461421 in words is "eighty million, four hundred sixty-one thousand, four hundred twenty-one".

Divisors: 1 37 79 2923 27527 1018499 2174633 80461421