49778136 has 24 divisors (see below), whose sum is σ = 134815980. Its totient is φ = 16592688.

The previous prime is 49778089. The next prime is 49778143. The reversal of 49778136 is 63187794.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 49778091 and 49778100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345610 + ... + 345753.

Almost surely, 2^49778136 is an apocalyptic number.

It is an amenable number.

49778136 is an abundant number, since it is smaller than the sum of its proper divisors (85037844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49778136 is a wasteful number, since it uses less digits than its factorization.

49778136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691375 (or 691368 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 49778136 is about 7055.3622160737. The cubic root of 49778136 is about 367.8574392665.

The spelling of 49778136 in words is "forty-nine million, seven hundred seventy-eight thousand, one hundred thirty-six".