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67628924 = 221117233931
BaseRepresentation
bin1000000011111…
…10111101111100
311201020220102222
410001332331330
5114303111144
610413304512
71450556606
oct401767574
9151226388
1067628924
11351a1680
121a795138
131101b51c
148da6176
155e0d2ee
hex407ef7c

67628924 has 48 divisors (see below), whose sum is σ = 142684416. Its totient is φ = 27667200.

The previous prime is 67628851. The next prime is 67628959. The reversal of 67628924 is 42982676.

It is a super-2 number, since 2×676289242 = 9147342722795552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 15239 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (2972592).

Almost surely, 267628924 is an apocalyptic number.

It is an amenable number.

67628924 is an abundant number, since it is smaller than the sum of its proper divisors (75055492).

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

67628924 is a wasteful number, since it uses less digits than its factorization.

67628924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3984 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 67628924 is about 8223.6806844624. The cubic root of 67628924 is about 407.4217024973.

The spelling of 67628924 in words is "sixty-seven million, six hundred twenty-eight thousand, nine hundred twenty-four".

Divisors: 1 2 4 11 17 22 23 34 44 46 68 92 187 253 374 391 506 748 782 1012 1564 3931 4301 7862 8602 15724 17204 43241 66827 86482 90413 133654 172964 180826 267308 361652 735097 994543 1470194 1537021 1989086 2940388 3074042 3978172 6148084 16907231 33814462 67628924