49540428 has 72 divisors (see below), whose sum is σ = 145131168. Its totient is φ = 13955328.

The previous prime is 49540409. The next prime is 49540457. The reversal of 49540428 is 82404594.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49540392 and 49540401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17050 + ... + 19742.

Almost surely, 2^49540428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49540428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72565584).

49540428 is an abundant number, since it is smaller than the sum of its proper divisors (95590740).

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

49540428 is a wasteful number, since it uses less digits than its factorization.

49540428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 49540428 is about 7038.4961461949. The cubic root of 49540428 is about 367.2709554311.

The spelling of 49540428 in words is "forty-nine million, five hundred forty thousand, four hundred twenty-eight".