49787478 has 48 divisors (see below), whose sum is σ = 116756640. Its totient is φ = 15242112.

The previous prime is 49787477. The next prime is 49787483. The reversal of 49787478 is 87478794.

49787478 is a `hidden beast` number, since 4 + 97 + 87 + 478 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49787477) 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, 61138 + ... + 61946.

It is an arithmetic number, because the mean of its divisors is an integer number (2432430).

Almost surely, 2^49787478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49787478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58378320).

49787478 is an abundant number, since it is smaller than the sum of its proper divisors (66969162).

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

49787478 is a wasteful number, since it uses less digits than its factorization.

49787478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1090 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 49787478 is about 7056.0242346523. The cubic root of 49787478 is about 367.8804501003.

The spelling of 49787478 in words is "forty-nine million, seven hundred eighty-seven thousand, four hundred seventy-eight".