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380687850 = 2345293997
BaseRepresentation
bin10110101100001…
…101010111101010
3222112022221120000
4112230031113222
51234424002400
6101435243430
712301536054
oct2654152752
9875287500
10380687850
11185985464
12a75a9576
1360b3c2aa
14387b88d4
152364b600
hex16b0d5ea

380687850 has 60 divisors (see below), whose sum is σ = 1057759494. Its totient is φ = 101515680.

The previous prime is 380687837. The next prime is 380687869. The reversal of 380687850 is 58786083.

It can be written as a sum of positive squares in 3 ways, for example, as 365077449 + 15610401 = 19107^2 + 3951^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 380687796 and 380687805.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 42949 + ... + 51048.

Almost surely, 2380687850 is an apocalyptic number.

380687850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

380687850 is an abundant number, since it is smaller than the sum of its proper divisors (677071644).

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

380687850 is a wasteful number, since it uses less digits than its factorization.

380687850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94021 (or 94007 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 380687850 is about 19511.2236930440. The cubic root of 380687850 is about 724.7524164521.

The spelling of 380687850 in words is "three hundred eighty million, six hundred eighty-seven thousand, eight hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 81 90 135 150 162 225 270 405 450 675 810 1350 2025 4050 93997 187994 281991 469985 563982 845973 939970 1409955 1691946 2349925 2537919 2819910 4229865 4699850 5075838 7049775 7613757 8459730 12689595 14099550 15227514 21149325 25379190 38068785 42298650 63447975 76137570 126895950 190343925 380687850