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128050406 = 2115820473
BaseRepresentation
bin1111010000111…
…10010011100110
322220221122010122
413220132103212
5230240103111
620412321542
73113260541
oct750362346
9286848118
10128050406
1166310190
1236a732b2
13206b5293
1413013858
15b395cdb
hex7a1e4e6

128050406 has 8 divisors (see below), whose sum is σ = 209537064. Its totient is φ = 58204720.

The previous prime is 128050387. The next prime is 128050427. The reversal of 128050406 is 604050821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2910215 + ... + 2910258.

It is an arithmetic number, because the mean of its divisors is an integer number (26192133).

Almost surely, 2128050406 is an apocalyptic number.

128050406 is a deficient number, since it is larger than the sum of its proper divisors (81486658).

128050406 is a wasteful number, since it uses less digits than its factorization.

128050406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820486.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 128050406 is about 11315.9359312432. The cubic root of 128050406 is about 504.0345650058.

The spelling of 128050406 in words is "one hundred twenty-eight million, fifty thousand, four hundred six".

Divisors: 1 2 11 22 5820473 11640946 64025203 128050406