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38013899 = 7113831289
BaseRepresentation
bin1001000100000…
…0101111001011
32122112022021012
42101000233023
534212421044
63434434135
7641053460
oct221005713
978468235
1038013899
111a504450
121089294b
137b4c841
145097667
15350d59e
hex2440bcb

38013899 has 16 divisors (see below), whose sum is σ = 47554560. Its totient is φ = 29520960.

The previous prime is 38013883. The next prime is 38013907. The reversal of 38013899 is 99831083.

It is not a de Polignac number, because 38013899 - 24 = 38013883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38013839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28847 + ... + 30135.

It is an arithmetic number, because the mean of its divisors is an integer number (2972160).

Almost surely, 238013899 is an apocalyptic number.

38013899 is a deficient number, since it is larger than the sum of its proper divisors (9540661).

38013899 is a wasteful number, since it uses less digits than its factorization.

38013899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 38013899 is about 6165.5412576675. The cubic root of 38013899 is about 336.2385252415.

The spelling of 38013899 in words is "thirty-eight million, thirteen thousand, eight hundred ninety-nine".

Divisors: 1 7 11 77 383 1289 2681 4213 9023 14179 29491 99253 493687 3455809 5430557 38013899