49128783 has 24 divisors (see below), whose sum is σ = 73779888. Its totient is φ = 29040000.

The previous prime is 49128763. The next prime is 49128797. The reversal of 49128783 is 38782194.

It is a de Polignac number, because none of the positive numbers 2^k-49128783 is a prime.

It is a super-2 number, since 2×49128783² = 4827274638122178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49128733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13233 + ... + 16533.

It is an arithmetic number, because the mean of its divisors is an integer number (3074162).

Almost surely, 2^49128783 is an apocalyptic number.

49128783 is a deficient number, since it is larger than the sum of its proper divisors (24651105).

49128783 is a wasteful number, since it uses less digits than its factorization.

49128783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367 (or 3356 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 49128783 is about 7009.1927495254. The cubic root of 49128783 is about 366.2508731201.

It can be divided in two parts, 4912 and 8783, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 49128783 in words is "forty-nine million, one hundred twenty-eight thousand, seven hundred eighty-three".