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40712080 = 245508901
BaseRepresentation
bin1001101101001…
…1011110010000
32211121101110211
42123103132100
540410241310
64012333504
71003022053
oct233233620
984541424
1040712080
1120a87652
1211774294
1385859b6
14559aa9a
153892c8a
hex26d3790

40712080 has 20 divisors (see below), whose sum is σ = 94655772. Its totient is φ = 16284800.

The previous prime is 40712069. The next prime is 40712101. The reversal of 40712080 is 8021704.

40712080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 31002624 = 3116^2 + 5568^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254371 + ... + 254530.

Almost surely, 240712080 is an apocalyptic number.

40712080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40712080 is an abundant number, since it is smaller than the sum of its proper divisors (53943692).

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

40712080 is a wasteful number, since it uses less digits than its factorization.

40712080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508914 (or 508908 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 40712080 is about 6380.6018524901. The cubic root of 40712080 is about 344.0126640371.

Adding to 40712080 its reverse (8021704), we get a palindrome (48733784).

The spelling of 40712080 in words is "forty million, seven hundred twelve thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 508901 1017802 2035604 2544505 4071208 5089010 8142416 10178020 20356040 40712080