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49978 = 224989
BaseRepresentation
bin1100001100111010
32112120001
430030322
53044403
61023214
7265465
oct141472
975501
1049978
1134605
1224b0a
1319996
14142dc
15ec1d
hexc33a

49978 has 4 divisors (see below), whose sum is σ = 74970. Its totient is φ = 24988.

The previous prime is 49957. The next prime is 49991. The reversal of 49978 is 87994.

It is a happy number.

49978 is nontrivially palindromic in base 5.

49978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87994 = 243997.

It can be written as a sum of positive squares in only one way, i.e., 26569 + 23409 = 163^2 + 153^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12493 + ... + 12496.

249978 is an apocalyptic number.

49978 is a deficient number, since it is larger than the sum of its proper divisors (24992).

49978 is a wasteful number, since it uses less digits than its factorization.

49978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24991.

The product of its digits is 18144, while the sum is 37.

The square root of 49978 is about 223.5575988420. The cubic root of 49978 is about 36.8349109475.

It can be divided in two parts, 4997 and 8, that added together give a palindrome (5005).

The spelling of 49978 in words is "forty-nine thousand, nine hundred seventy-eight".

Divisors: 1 2 24989 49978