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210804080 = 24517155003
BaseRepresentation
bin11001001000010…
…01110101110000
3112200122221211112
430210021311300
5412431212310
632530132452
75136543104
oct1444116560
9480587745
10210804080
11a8aa2253
125a721128
133489ab56
141ddd5904
1513790705
hexc909d70

210804080 has 40 divisors (see below), whose sum is σ = 518953392. Its totient is φ = 79361024.

The previous prime is 210804079. The next prime is 210804091. The reversal of 210804080 is 80408012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 76142 + ... + 78861.

Almost surely, 2210804080 is an apocalyptic number.

210804080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210804080 is an abundant number, since it is smaller than the sum of its proper divisors (308149312).

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

210804080 is a wasteful number, since it uses less digits than its factorization.

210804080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155033 (or 155027 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 210804080 is about 14519.0936356234. The cubic root of 210804080 is about 595.1498622111.

The spelling of 210804080 in words is "two hundred ten million, eight hundred four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 680 1360 155003 310006 620012 775015 1240024 1550030 2480048 2635051 3100060 5270102 6200120 10540204 12400240 13175255 21080408 26350510 42160816 52701020 105402040 210804080