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1377107646 = 231375116691
BaseRepresentation
bin101001000010100…
…1111111010111110
310112222021022112220
41102011033322332
510310014421041
6344352110210
746061136045
oct12205177276
93488238486
101377107646
116473833a2
12325235366
1318c3c49c5
14d0c7355c
1580d71d66
hex5214febe

1377107646 has 16 divisors (see below), whose sum is σ = 2754580608. Its totient is φ = 458975000.

The previous prime is 1377107621. The next prime is 1377107647. The reversal of 1377107646 is 6467017731.

It is a super-2 number, since 2×13771076462 = 3792850937343322632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1377107598 and 1377107607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377107647) 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, 74161 + ... + 90851.

It is an arithmetic number, because the mean of its divisors is an integer number (172161288).

Almost surely, 21377107646 is an apocalyptic number.

1377107646 is an abundant number, since it is smaller than the sum of its proper divisors (1377472962).

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

1377107646 is a wasteful number, since it uses less digits than its factorization.

1377107646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30447.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1377107646 is about 37109.4010460961. The cubic root of 1377107646 is about 1112.5579204116.

The spelling of 1377107646 in words is "one billion, three hundred seventy-seven million, one hundred seven thousand, six hundred forty-six".

Divisors: 1 2 3 6 13751 16691 27502 33382 41253 50073 82506 100146 229517941 459035882 688553823 1377107646