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1201200385 = 57114766383
BaseRepresentation
bin100011110011000…
…1101110100000001
310002201021022011011
41013212031310001
54430001403020
6315105520521
741524014640
oct10746156401
93081238134
101201200385
115670566a0
12296343141
13161b24978
14b5763357
15706c635a
hex4798dd01

1201200385 has 32 divisors (see below), whose sum is σ = 1835384832. Its totient is φ = 732857280.

The previous prime is 1201200379. The next prime is 1201200389. The reversal of 1201200385 is 5830021021.

It is not a de Polignac number, because 1201200385 - 211 = 1201198337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201200389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15097 + ... + 51286.

It is an arithmetic number, because the mean of its divisors is an integer number (57355776).

Almost surely, 21201200385 is an apocalyptic number.

It is an amenable number.

1201200385 is a deficient number, since it is larger than the sum of its proper divisors (634184447).

1201200385 is a wasteful number, since it uses less digits than its factorization.

1201200385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66453.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1201200385 is about 34658.3378857094. The cubic root of 1201200385 is about 1063.0127842678.

The spelling of 1201200385 in words is "one billion, two hundred one million, two hundred thousand, three hundred eighty-five".

Divisors: 1 5 7 11 35 47 55 77 235 329 385 517 1645 2585 3619 18095 66383 331915 464681 730213 2323405 3120001 3651065 5111491 15600005 21840007 25557455 34320011 109200035 171600055 240240077 1201200385