49128164 has 24 divisors (see below), whose sum is σ = 91252728. Its totient is φ = 23063040.

The previous prime is 49128109. The next prime is 49128199. The reversal of 49128164 is 46182194.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36096064 + 13032100 = 6008^2 + 3610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44402 + ... + 45494.

It is an arithmetic number, because the mean of its divisors is an integer number (3802197).

Almost surely, 2^49128164 is an apocalyptic number.

It is an amenable number.

49128164 is a deficient number, since it is larger than the sum of its proper divisors (42124564).

49128164 is a wasteful number, since it uses less digits than its factorization.

49128164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1773 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 49128164 is about 7009.1485930889. The cubic root of 49128164 is about 366.2493349163.

It can be divided in two parts, 49 and 128164, that multiplied together give a square (6280036 = 2506²).

The spelling of 49128164 in words is "forty-nine million, one hundred twenty-eight thousand, one hundred sixty-four".