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69223530 = 2352307451
BaseRepresentation
bin1000010000001…
…00010001101010
311211020220211110
410020010101222
5120210123110
610511411150
71500250605
oct410042152
9154226743
1069223530
1136090732
121b223ab6
131145928c
14929d33c
156125a20
hex420446a

69223530 has 16 divisors (see below), whose sum is σ = 166136544. Its totient is φ = 18459600.

The previous prime is 69223523. The next prime is 69223547. The reversal of 69223530 is 3532296.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2307451 = 69223530 / (6 + 9 + 2 + 2 + 3 + 5 + 3 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153696 + ... + 1153755.

It is an arithmetic number, because the mean of its divisors is an integer number (10383534).

Almost surely, 269223530 is an apocalyptic number.

69223530 is an abundant number, since it is smaller than the sum of its proper divisors (96913014).

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

69223530 is a wasteful number, since it uses less digits than its factorization.

69223530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307461.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 69223530 is about 8320.0679083767. The cubic root of 69223530 is about 410.5990252283.

The spelling of 69223530 in words is "sixty-nine million, two hundred twenty-three thousand, five hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 2307451 4614902 6922353 11537255 13844706 23074510 34611765 69223530