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390912020122 = 21397267158031
BaseRepresentation
bin1011011000001000010…
…11000000111010011010
31101101000022221011021111
411230010023000322122
522401041434120442
6455325453130534
740146110226601
oct5540413007232
91341008834244
10390912020122
1114086a70a628
1263917789a4a
132ab2a895760
1414cc5208a38
15a27db3db17
hex5b042c0e9a

390912020122 has 32 divisors (see below), whose sum is σ = 638233150464. Its totient is φ = 178490995200.

The previous prime is 390912020113. The next prime is 390912020123. The reversal of 390912020122 is 221020219093.

It is not an unprimeable number, because it can be changed into a prime (390912020123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6707247 + ... + 6765277.

It is an arithmetic number, because the mean of its divisors is an integer number (19944785952).

Almost surely, 2390912020122 is an apocalyptic number.

390912020122 is a deficient number, since it is larger than the sum of its proper divisors (247321130342).

390912020122 is a wasteful number, since it uses less digits than its factorization.

390912020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60814.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 390912020122 in words is "three hundred ninety billion, nine hundred twelve million, twenty thousand, one hundred twenty-two".

Divisors: 1 2 13 26 97 194 1261 2522 2671 5342 34723 58031 69446 116062 259087 518174 754403 1508806 3368131 5629007 6736262 11258014 73177091 146354182 155000801 310001602 2015010413 4030020826 15035077697 30070155394 195456010061 390912020122