49921140 has 96 divisors (see below), whose sum is σ = 145555200. Its totient is φ = 12773376.

The previous prime is 49921117. The next prime is 49921141. The reversal of 49921140 is 4112994.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 49921098 and 49921107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49921141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250761 + ... + 250959.

It is an arithmetic number, because the mean of its divisors is an integer number (1516200).

Almost surely, 2^49921140 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 49921140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72777600).

49921140 is an abundant number, since it is smaller than the sum of its proper divisors (95634060).

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

49921140 is a wasteful number, since it uses less digits than its factorization.

49921140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 49921140 is about 7065.4893673404. The cubic root of 49921140 is about 368.2093661337.

The spelling of 49921140 in words is "forty-nine million, nine hundred twenty-one thousand, one hundred forty".