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428019670 = 251316571987
BaseRepresentation
bin11001100000110…
…000111111010110
31002211101122121101
4121200300333112
51334033112140
6110245540314
713415051521
oct3140607726
91084348541
10428019670
111aa673571
12bb41469a
136a8a20a0
1440bb9bb8
152789a99a
hex19830fd6

428019670 has 32 divisors (see below), whose sum is σ = 830618208. Its totient is φ = 157863168.

The previous prime is 428019661. The next prime is 428019703. The reversal of 428019670 is 76910824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214417 + ... + 216403.

It is an arithmetic number, because the mean of its divisors is an integer number (25956819).

Almost surely, 2428019670 is an apocalyptic number.

428019670 is a deficient number, since it is larger than the sum of its proper divisors (402598538).

428019670 is a wasteful number, since it uses less digits than its factorization.

428019670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 428019670 is about 20688.6362527838. The cubic root of 428019670 is about 753.6237489849.

The spelling of 428019670 in words is "four hundred twenty-eight million, nineteen thousand, six hundred seventy".

Divisors: 1 2 5 10 13 26 65 130 1657 1987 3314 3974 8285 9935 16570 19870 21541 25831 43082 51662 107705 129155 215410 258310 3292459 6584918 16462295 32924590 42801967 85603934 214009835 428019670