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380157240 = 23353785621
BaseRepresentation
bin10110101010001…
…011110100111000
3222111022222200210
4112222023310320
51234310012430
6101420031120
712264166101
oct2652136470
9874288623
10380157240
11185652841
12a73924a0
13609b4918
14386bb3a8
15235942b0
hex16a8bd38

380157240 has 64 divisors (see below), whose sum is σ = 1171308960. Its totient is φ = 98634240.

The previous prime is 380157221. The next prime is 380157251. The reversal of 380157240 is 42751083.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 380157198 and 380157207.

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, 38371 + ... + 47250.

Almost surely, 2380157240 is an apocalyptic number.

380157240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

380157240 is an abundant number, since it is smaller than the sum of its proper divisors (791151720).

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

380157240 is a wasteful number, since it uses less digits than its factorization.

380157240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85672 (or 85668 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 380157240 is about 19497.6213933905. The cubic root of 380157240 is about 724.4155352973.

The spelling of 380157240 in words is "three hundred eighty million, one hundred fifty-seven thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 37 40 60 74 111 120 148 185 222 296 370 444 555 740 888 1110 1480 2220 4440 85621 171242 256863 342484 428105 513726 684968 856210 1027452 1284315 1712420 2054904 2568630 3167977 3424840 5137260 6335954 9503931 10274520 12671908 15839885 19007862 25343816 31679770 38015724 47519655 63359540 76031448 95039310 126719080 190078620 380157240