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402761493 = 32113396029
BaseRepresentation
bin11000000000011…
…010011100010101
31001001212101220100
4120000122130111
51311101331433
6103544324313
712660262521
oct3000323425
91031771810
10402761493
11197391742
12b2a73699
136559a514
143b6c2d81
152555bb13
hex1801a715

402761493 has 12 divisors (see below), whose sum is σ = 586916460. Its totient is φ = 266130816.

The previous prime is 402761479. The next prime is 402761503. The reversal of 402761493 is 394167204.

It can be written as a sum of positive squares in 2 ways, for example, as 27060804 + 375700689 = 5202^2 + 19383^2 .

It is not a de Polignac number, because 402761493 - 24 = 402761477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402761423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196998 + ... + 199031.

It is an arithmetic number, because the mean of its divisors is an integer number (48909705).

Almost surely, 2402761493 is an apocalyptic number.

It is an amenable number.

402761493 is a deficient number, since it is larger than the sum of its proper divisors (184154967).

402761493 is a wasteful number, since it uses less digits than its factorization.

402761493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396148 (or 396145 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 402761493 is about 20068.9185807308. The cubic root of 402761493 is about 738.4979839009.

The spelling of 402761493 in words is "four hundred two million, seven hundred sixty-one thousand, four hundred ninety-three".

Divisors: 1 3 9 113 339 1017 396029 1188087 3564261 44751277 134253831 402761493