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69472090 = 2543161563
BaseRepresentation
bin1000010010000…
…00111101011010
311211201112210101
410021000331122
5120241101330
610521010014
71502334352
oct411007532
9154645711
1069472090
1136240456
121b32390a
131151545c
149325b62
1561744ca
hex4240f5a

69472090 has 16 divisors (see below), whose sum is σ = 127958688. Its totient is φ = 27142416.

The previous prime is 69472069. The next prime is 69472093. The reversal of 69472090 is 9027496.

It is not an unprimeable number, because it can be changed into a prime (69472093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80352 + ... + 81211.

It is an arithmetic number, because the mean of its divisors is an integer number (7997418).

Almost surely, 269472090 is an apocalyptic number.

69472090 is a deficient number, since it is larger than the sum of its proper divisors (58486598).

69472090 is a wasteful number, since it uses less digits than its factorization.

69472090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161613.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 69472090 is about 8334.9919016157. The cubic root of 69472090 is about 411.0898823278.

The spelling of 69472090 in words is "sixty-nine million, four hundred seventy-two thousand, ninety".

Divisors: 1 2 5 10 43 86 215 430 161563 323126 807815 1615630 6947209 13894418 34736045 69472090