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38840073 = 315782463
BaseRepresentation
bin1001010000101…
…0011100001001
32201002021120020
42110022130021
534420340243
63504251053
7651064236
oct224123411
981067506
1038840073
111aa19138
1211010a89
13807b8bc
14523078d
153623283
hex250a709

38840073 has 8 divisors (see below), whose sum is σ = 52117248. Its totient is φ = 25728144.

The previous prime is 38840071. The next prime is 38840083. The reversal of 38840073 is 37004883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38840073 - 21 = 38840071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38840071) 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, 40761 + ... + 41702.

It is an arithmetic number, because the mean of its divisors is an integer number (6514656).

Almost surely, 238840073 is an apocalyptic number.

It is an amenable number.

38840073 is a deficient number, since it is larger than the sum of its proper divisors (13277175).

38840073 is a wasteful number, since it uses less digits than its factorization.

38840073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82623.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 38840073 is about 6232.1804370541. The cubic root of 38840073 is about 338.6569654145.

The spelling of 38840073 in words is "thirty-eight million, eight hundred forty thousand, seventy-three".

Divisors: 1 3 157 471 82463 247389 12946691 38840073