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76250431 = 154349417
BaseRepresentation
bin1001000101101…
…11110100111111
312022110220221001
410202313310333
5124010003211
611322151131
71614055315
oct442676477
9168426831
1076250431
113a050094
12216524a7
1312a497ca
14a1ac0b5
156a62ac1
hex48b7d3f

76250431 has 4 divisors (see below), whose sum is σ = 76301392. Its totient is φ = 76199472.

The previous prime is 76250429. The next prime is 76250437. The reversal of 76250431 is 13405267.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76250431 - 21 = 76250429 is a prime.

It is a super-2 number, since 2×762504312 = 11628256455371522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76250431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76250437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23166 + ... + 26251.

It is an arithmetic number, because the mean of its divisors is an integer number (19075348).

Almost surely, 276250431 is an apocalyptic number.

76250431 is a deficient number, since it is larger than the sum of its proper divisors (50961).

76250431 is a wasteful number, since it uses less digits than its factorization.

76250431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50960.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 76250431 is about 8732.1492772398. The cubic root of 76250431 is about 424.0471033910.

Adding to 76250431 its reverse (13405267), we get a palindrome (89655698).

The spelling of 76250431 in words is "seventy-six million, two hundred fifty thousand, four hundred thirty-one".

Divisors: 1 1543 49417 76250431