49213920 has 192 divisors, whose sum is σ = 180182016. Its totient is φ = 11059200.

The previous prime is 49213907. The next prime is 49213921. The reversal of 49213920 is 2931294.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49213921) 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, 325845 + ... + 325995.

It is an arithmetic number, because the mean of its divisors is an integer number (938448).

Almost surely, 2^49213920 is an apocalyptic number.

49213920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49213920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90091008).

49213920 is an abundant number, since it is smaller than the sum of its proper divisors (130968096).

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

49213920 is a wasteful number, since it uses less digits than its factorization.

49213920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 49213920 is about 7015.2633592760. The cubic root of 49213920 is about 366.4623140458.

The spelling of 49213920 in words is "forty-nine million, two hundred thirteen thousand, nine hundred twenty".