49128765 has 16 divisors (see below), whose sum is σ = 89835648. Its totient is φ = 22458816.

The previous prime is 49128763. The next prime is 49128797. The reversal of 49128765 is 56782194.

It is not a de Polignac number, because 49128765 - 2¹ = 49128763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49128763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233842 + ... + 234051.

It is an arithmetic number, because the mean of its divisors is an integer number (5614728).

Almost surely, 2^49128765 is an apocalyptic number.

It is an amenable number.

49128765 is a deficient number, since it is larger than the sum of its proper divisors (40706883).

49128765 is a wasteful number, since it uses less digits than its factorization.

49128765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467908.

The product of its digits is 120960, while the sum is 42.

The square root of 49128765 is about 7009.1914654973. The cubic root of 49128765 is about 366.2508283906.

The spelling of 49128765 in words is "forty-nine million, one hundred twenty-eight thousand, seven hundred sixty-five".