49857780 has 48 divisors (see below), whose sum is σ = 159546240. Its totient is φ = 11395968.

The previous prime is 49857779. The next prime is 49857781. The reversal of 49857780 is 8775894.

It is an interprime number because it is at equal distance from previous prime (49857779) and next prime (49857781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49857781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58935 + ... + 59774.

It is an arithmetic number, because the mean of its divisors is an integer number (3323880).

Almost surely, 2^49857780 is an apocalyptic number.

It is an amenable number.

49857780 is an abundant number, since it is smaller than the sum of its proper divisors (109688460).

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

49857780 is a wasteful number, since it uses less digits than its factorization.

49857780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118728 (or 118726 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 49857780 is about 7061.0041778773. The cubic root of 49857780 is about 368.0535228547.

The spelling of 49857780 in words is "forty-nine million, eight hundred fifty-seven thousand, seven hundred eighty".