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1380038072 = 23724643537
BaseRepresentation
bin101001001000001…
…1011010110111000
310120011210012100012
41102100123112320
510311242204242
6344535001052
746125062420
oct12220332670
93504705305
101380038072
11648aa5036
12326209188
1318cbac79a
14d13d7480
1581250282
hex5241b5b8

1380038072 has 16 divisors (see below), whose sum is σ = 2957224560. Its totient is φ = 591444864.

The previous prime is 1380038071. The next prime is 1380038081. The reversal of 1380038072 is 2708300831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380038071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12321713 + ... + 12321824.

It is an arithmetic number, because the mean of its divisors is an integer number (184826535).

Almost surely, 21380038072 is an apocalyptic number.

It is an amenable number.

1380038072 is an abundant number, since it is smaller than the sum of its proper divisors (1577186488).

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

1380038072 is a wasteful number, since it uses less digits than its factorization.

1380038072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24643550 (or 24643546 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1380038072 is about 37148.8636703736. The cubic root of 1380038072 is about 1113.3465198178.

The spelling of 1380038072 in words is "one billion, three hundred eighty million, thirty-eight thousand, seventy-two".

Divisors: 1 2 4 7 8 14 28 56 24643537 49287074 98574148 172504759 197148296 345009518 690019036 1380038072