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68769400 = 2352749121
BaseRepresentation
bin1000001100101…
…01011001111000
311210101211212211
410012111121320
5120101110100
610453544504
71463346610
oct406253170
9153354784
1068769400
1135900517
121b045134
131132a66b
1491c1a40
1560861ba
hex4195678

68769400 has 48 divisors (see below), whose sum is σ = 182733840. Its totient is φ = 23577600.

The previous prime is 68769391. The next prime is 68769443. The reversal of 68769400 is 496786.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23161 + ... + 25960.

It is an arithmetic number, because the mean of its divisors is an integer number (3806955).

Almost surely, 268769400 is an apocalyptic number.

It is an amenable number.

68769400 is an abundant number, since it is smaller than the sum of its proper divisors (113964440).

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

68769400 is a wasteful number, since it uses less digits than its factorization.

68769400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49144 (or 49135 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 68769400 is about 8292.7317573885. The cubic root of 68769400 is about 409.6991646041.

It can be divided in two parts, 68769 and 400, that added together give a square (69169 = 2632).

The spelling of 68769400 in words is "sixty-eight million, seven hundred sixty-nine thousand, four hundred".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 140 175 200 280 350 700 1400 49121 98242 196484 245605 343847 392968 491210 687694 982420 1228025 1375388 1719235 1964840 2456050 2750776 3438470 4912100 6876940 8596175 9824200 13753880 17192350 34384700 68769400