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388051396 = 2297012849
BaseRepresentation
bin10111001000010…
…011000111000100
31000001012001102221
4113020103013010
51243320121041
6102301142124
712421245115
oct2710230704
91001161387
10388051396
1118a054837
12a9b5a944
1362519b15
143977420c
15241032d1
hex172131c4

388051396 has 6 divisors (see below), whose sum is σ = 679089950. Its totient is φ = 194025696.

The previous prime is 388051373. The next prime is 388051399. The reversal of 388051396 is 693150883.

It can be written as a sum of positive squares in only one way, i.e., 278556100 + 109495296 = 16690^2 + 10464^2 .

It is not an unprimeable number, because it can be changed into a prime (388051399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48506421 + ... + 48506428.

Almost surely, 2388051396 is an apocalyptic number.

It is an amenable number.

388051396 is a deficient number, since it is larger than the sum of its proper divisors (291038554).

388051396 is a wasteful number, since it uses less digits than its factorization.

388051396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97012853 (or 97012851 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 388051396 is about 19699.0201786789. The cubic root of 388051396 is about 729.3955063285.

The spelling of 388051396 in words is "three hundred eighty-eight million, fifty-one thousand, three hundred ninety-six".

Divisors: 1 2 4 97012849 194025698 388051396