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40064144 = 242504009
BaseRepresentation
bin1001100011010…
…1010010010000
32210101110200012
42120311102100
540224023034
63550414052
7664353041
oct230652220
983343605
1040064144
112068486a
1211501328
1383b9ac3
14546c8c8
1537b5cce
hex2635490

40064144 has 10 divisors (see below), whose sum is σ = 77624310. Its totient is φ = 20032064.

The previous prime is 40064113. The next prime is 40064161. The reversal of 40064144 is 44146004.

It can be written as a sum of positive squares in only one way, i.e., 31584400 + 8479744 = 5620^2 + 2912^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251989 + ... + 1252020.

It is an arithmetic number, because the mean of its divisors is an integer number (7762431).

Almost surely, 240064144 is an apocalyptic number.

It is an amenable number.

40064144 is a deficient number, since it is larger than the sum of its proper divisors (37560166).

40064144 is a wasteful number, since it uses less digits than its factorization.

40064144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504017 (or 2504011 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 40064144 is about 6329.6243174457. The cubic root of 40064144 is about 342.1778995340.

The spelling of 40064144 in words is "forty million, sixty-four thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 2504009 5008018 10016036 20032072 40064144