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BaseRepresentation
bin1011000100101000010…
…01100001110101000000
31100100222200221221110201
411202110021201311000
522213121304212442
6450434542134544
736325503102460
oct5422411416500
91310880857421
10380442647872
11137387a58271
1261895581454
1329b4c887b31
14145b09c3ba0
159d699677b7
hex5894261d40

380442647872 has 56 divisors (see below), whose sum is σ = 864111511296. Its totient is φ = 162797035008.

The previous prime is 380442647867. The next prime is 380442647873. The reversal of 380442647872 is 278746244083.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×3804426478722 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380442647873) 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, 357688 + ... + 942775.

Almost surely, 2380442647872 is an apocalyptic number.

380442647872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

380442647872 is an abundant number, since it is smaller than the sum of its proper divisors (483668863424).

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

380442647872 is a wasteful number, since it uses less digits than its factorization.

380442647872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301135 (or 1301125 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 55.

The spelling of 380442647872 in words is "three hundred eighty billion, four hundred forty-two million, six hundred forty-seven thousand, eight hundred seventy-two".