Search a number
-
+
38390076240 = 2435159958651
BaseRepresentation
bin100011110000001110…
…100001001101010000
310200002110200221021120
4203300032201031100
51112110324414430
625345224322240
72526225156345
oct436016411520
9120073627246
1038390076240
111531021953a
127534913380
13380a683859
141c028527cc
15eea4c7610
hex8f03a1350

38390076240 has 40 divisors (see below), whose sum is σ = 119009237088. Its totient is φ = 10237353600.

The previous prime is 38390076239. The next prime is 38390076259. The reversal of 38390076240 is 4267009383.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 38390076192 and 38390076201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79979086 + ... + 79979565.

Almost surely, 238390076240 is an apocalyptic number.

38390076240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38390076240 is an abundant number, since it is smaller than the sum of its proper divisors (80619160848).

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

38390076240 is a wasteful number, since it uses less digits than its factorization.

38390076240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159958667 (or 159958661 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 38390076240 in words is "thirty-eight billion, three hundred ninety million, seventy-six thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 159958651 319917302 479875953 639834604 799793255 959751906 1279669208 1599586510 1919503812 2399379765 2559338416 3199173020 3839007624 4798759530 6398346040 7678015248 9597519060 12796692080 19195038120 38390076240