49111920 has 400 divisors, whose sum is σ = 204174432. Its totient is φ = 10782720.

The previous prime is 49111873. The next prime is 49111927. The reversal of 49111920 is 2911194.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49111927) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 926614 + ... + 926666.

Almost surely, 2^49111920 is an apocalyptic number.

49111920 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 49111920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102087216).

49111920 is an abundant number, since it is smaller than the sum of its proper divisors (155062512).

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

49111920 is a wasteful number, since it uses less digits than its factorization.

49111920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 49111920 is about 7007.9897260199. The cubic root of 49111920 is about 366.2089642508.

The spelling of 49111920 in words is "forty-nine million, one hundred eleven thousand, nine hundred twenty".