49191428 has 24 divisors (see below), whose sum is σ = 101136000. Its totient is φ = 20639520.

The previous prime is 49191419. The next prime is 49191481. The reversal of 49191428 is 82419194.

It is a junction number, because it is equal to n+sod(n) for n = 49191391 and 49191400.

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, 42428 + ... + 43571.

It is an arithmetic number, because the mean of its divisors is an integer number (4214000).

Almost surely, 2^49191428 is an apocalyptic number.

It is an amenable number.

49191428 is an abundant number, since it is smaller than the sum of its proper divisors (51944572).

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

49191428 is a wasteful number, since it uses less digits than its factorization.

49191428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86027 (or 86025 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 49191428 is about 7013.6601001189. The cubic root of 49191428 is about 366.4064780387.

It can be divided in two parts, 491 and 91428, that added together give a palindrome (91919).

The spelling of 49191428 in words is "forty-nine million, one hundred ninety-one thousand, four hundred twenty-eight".