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90247941 = 3277918133
BaseRepresentation
bin1010110000100…
…01001100000101
320021211001220100
411120101030011
5141100413231
612542154313
72144044350
oct530211405
9207731810
1090247941
1146a40683
1226282999
131590aa64
14bdb3297
157dca1e6
hex5611305

90247941 has 24 divisors (see below), whose sum is σ = 150874880. Its totient is φ = 50914656.

The previous prime is 90247939. The next prime is 90247957. The reversal of 90247941 is 14974209.

It is not a de Polignac number, because 90247941 - 21 = 90247939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90247896 and 90247905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90247931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4090 + ... + 14043.

Almost surely, 290247941 is an apocalyptic number.

It is an amenable number.

90247941 is a deficient number, since it is larger than the sum of its proper divisors (60626939).

90247941 is a wasteful number, since it uses less digits than its factorization.

90247941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18225 (or 18222 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 90247941 is about 9499.8916309609. The cubic root of 90247941 is about 448.5516247253.

The spelling of 90247941 in words is "ninety million, two hundred forty-seven thousand, nine hundred forty-one".

Divisors: 1 3 7 9 21 63 79 237 553 711 1659 4977 18133 54399 126931 163197 380793 1142379 1432507 4297521 10027549 12892563 30082647 90247941