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38120056 = 23133591021
BaseRepresentation
bin1001000101101…
…0101001111000
32122201200212221
42101122221320
534224320211
63441013424
7642005122
oct221325170
978650787
1038120056
111a577187
1210924274
137b88c60
1450c4212
15352ec71
hex245aa78

38120056 has 32 divisors (see below), whose sum is σ = 77263200. Its totient is φ = 17527680.

The previous prime is 38120053. The next prime is 38120057. The reversal of 38120056 is 65002183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38120056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38120051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36826 + ... + 37846.

It is an arithmetic number, because the mean of its divisors is an integer number (2414475).

Almost surely, 238120056 is an apocalyptic number.

It is an amenable number.

38120056 is an abundant number, since it is smaller than the sum of its proper divisors (39143144).

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

38120056 is a wasteful number, since it uses less digits than its factorization.

38120056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 38120056 is about 6174.1441512164. The cubic root of 38120056 is about 336.5512257649.

The spelling of 38120056 in words is "thirty-eight million, one hundred twenty thousand, fifty-six".

Divisors: 1 2 4 8 13 26 52 104 359 718 1021 1436 2042 2872 4084 4667 8168 9334 13273 18668 26546 37336 53092 106184 366539 733078 1466156 2932312 4765007 9530014 19060028 38120056