49651920 has 160 divisors (see below), whose sum is σ = 173322240. Its totient is φ = 13063680.

The previous prime is 49651897. The next prime is 49651949. The reversal of 49651920 is 2915694.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 274230 + ... + 274410.

It is an arithmetic number, because the mean of its divisors is an integer number (1083264).

Almost surely, 2^49651920 is an apocalyptic number.

49651920 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 49651920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86661120).

49651920 is an abundant number, since it is smaller than the sum of its proper divisors (123670320).

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

49651920 is a wasteful number, since it uses less digits than its factorization.

49651920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 49651920 is about 7046.4118528511. The cubic root of 49651920 is about 367.5462665615.

The spelling of 49651920 in words is "forty-nine million, six hundred fifty-one thousand, nine hundred twenty".