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90050208 = 253938023
BaseRepresentation
bin1010101111000…
…00111010100000
320021110000122220
411113200322200
5141023101313
612534031040
72142262023
oct527407240
9207400586
1090050208
1146916066
12261a8480
131586ba61
14bd611ba
157d8b823
hex55e0ea0

90050208 has 24 divisors (see below), whose sum is σ = 236382048. Its totient is φ = 30016704.

The previous prime is 90050203. The next prime is 90050231. The reversal of 90050208 is 80205009.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×900502083 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (90050201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468916 + ... + 469107.

It is an arithmetic number, because the mean of its divisors is an integer number (9849252).

Almost surely, 290050208 is an apocalyptic number.

It is an amenable number.

90050208 is an abundant number, since it is smaller than the sum of its proper divisors (146331840).

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

90050208 is a wasteful number, since it uses less digits than its factorization.

90050208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938036 (or 938028 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 90050208 is about 9489.4788054982. The cubic root of 90050208 is about 448.2237933750.

The spelling of 90050208 in words is "ninety million, fifty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 938023 1876046 2814069 3752092 5628138 7504184 11256276 15008368 22512552 30016736 45025104 90050208