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49874281 = 2343211239
BaseRepresentation
bin1011111001000…
…0010101101001
310110211212122121
42332100111221
5100231434111
64540551241
71143632032
oct276202551
9113755577
1049874281
1126175316
1214852521
13a443112
1468a3a89
1545a2871
hex2f90569

49874281 has 16 divisors (see below), whose sum is σ = 53729280. Its totient is φ = 46181520.

The previous prime is 49874263. The next prime is 49874303. The reversal of 49874281 is 18247894.

49874281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49874281 is a prime.

It is a super-2 number, since 2×498742812 = 4974887810533922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49874581) 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 15 ways as a sum of consecutive naturals, for example, 208560 + ... + 208798.

It is an arithmetic number, because the mean of its divisors is an integer number (3358080).

Almost surely, 249874281 is an apocalyptic number.

It is an amenable number.

49874281 is a deficient number, since it is larger than the sum of its proper divisors (3854999).

49874281 is a wasteful number, since it uses less digits than its factorization.

49874281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 129024, while the sum is 43.

The square root of 49874281 is about 7062.1725410811. The cubic root of 49874281 is about 368.0941222108.

The spelling of 49874281 in words is "forty-nine million, eight hundred seventy-four thousand, two hundred eighty-one".

Divisors: 1 23 43 211 239 989 4853 5497 9073 10277 50429 208679 236371 1159867 2168447 49874281