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40974880 = 255256093
BaseRepresentation
bin1001110001001…
…1101000100000
32212002201222011
42130103220200
540442144010
64022122304
71005165202
oct234235040
985081864
1040974880
1121147041
1211880394
1386484bb
145628772
1538e5a8a
hex2713a20

40974880 has 24 divisors (see below), whose sum is σ = 96803532. Its totient is φ = 16389888.

The previous prime is 40974863. The next prime is 40974889. The reversal of 40974880 is 8847904.

It can be written as a sum of positive squares in 2 ways, for example, as 34152336 + 6822544 = 5844^2 + 2612^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (40974889) 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, 127887 + ... + 128206.

Almost surely, 240974880 is an apocalyptic number.

40974880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40974880 is an abundant number, since it is smaller than the sum of its proper divisors (55828652).

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

40974880 is a wasteful number, since it uses less digits than its factorization.

40974880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256108 (or 256100 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 40974880 is about 6401.1623944406. The cubic root of 40974880 is about 344.7512875235.

The spelling of 40974880 in words is "forty million, nine hundred seventy-four thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 256093 512186 1024372 1280465 2048744 2560930 4097488 5121860 8194976 10243720 20487440 40974880