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74675970 = 2325829733
BaseRepresentation
bin1000111001101…
…11011100000010
312012111221011200
410130313130002
5123104112340
611224322030
71564510125
oct434673402
9165457150
1074675970
1139175186
1221013316
1312617c85
149cbc3bc
156851330
hex4737702

74675970 has 24 divisors (see below), whose sum is σ = 194157756. Its totient is φ = 19913568.

The previous prime is 74675959. The next prime is 74675971. The reversal of 74675970 is 7957647.

It can be written as a sum of positive squares in 2 ways, for example, as 72233001 + 2442969 = 8499^2 + 1563^2 .

It is a Smith number, since the sum of its digits (45) 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 (45).

It is not an unprimeable number, because it can be changed into a prime (74675971) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 414777 + ... + 414956.

Almost surely, 274675970 is an apocalyptic number.

74675970 is an abundant number, since it is smaller than the sum of its proper divisors (119481786).

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

74675970 is a wasteful number, since it uses less digits than its factorization.

74675970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829746 (or 829743 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 74675970 is about 8641.5259069218. The cubic root of 74675970 is about 421.1081281647.

The spelling of 74675970 in words is "seventy-four million, six hundred seventy-five thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 829733 1659466 2489199 4148665 4978398 7467597 8297330 12445995 14935194 24891990 37337985 74675970