49965720 has 128 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 10745856.

The previous prime is 49965679. The next prime is 49965733. The reversal of 49965720 is 2756994.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12531 + ... + 16029.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^49965720 is an apocalyptic number.

49965720 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 49965720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

49965720 is an abundant number, since it is smaller than the sum of its proper divisors (131474280).

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

49965720 is a wasteful number, since it uses less digits than its factorization.

49965720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 49965720 is about 7068.6434342100. The cubic root of 49965720 is about 368.3189382161.

The spelling of 49965720 in words is "forty-nine million, nine hundred sixty-five thousand, seven hundred twenty".