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90680424 = 23323915809
BaseRepresentation
bin1010110011110…
…10110001101000
320022122001011020
411121322301220
5141203233144
612555332440
72150525262
oct531726150
9208561136
1090680424
11472065aa
1226451120
1315a2c873
14c086b32
157e63419
hex567ac68

90680424 has 32 divisors (see below), whose sum is σ = 227664000. Its totient is φ = 30098432.

The previous prime is 90680423. The next prime is 90680441. The reversal of 90680424 is 42408609.

It is not an unprimeable number, because it can be changed into a prime (90680423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (7114500).

Almost surely, 290680424 is an apocalyptic number.

It is an amenable number.

90680424 is an abundant number, since it is smaller than the sum of its proper divisors (136983576).

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

90680424 is a wasteful number, since it uses less digits than its factorization.

90680424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057 (or 16053 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 90680424 is about 9522.6269484843. The cubic root of 90680424 is about 449.2669943085.

The spelling of 90680424 in words is "ninety million, six hundred eighty thousand, four hundred twenty-four".

Divisors: 1 2 3 4 6 8 12 24 239 478 717 956 1434 1912 2868 5736 15809 31618 47427 63236 94854 126472 189708 379416 3778351 7556702 11335053 15113404 22670106 30226808 45340212 90680424