48990 has 32 divisors (see below), whose sum is σ = 124416. Its totient is φ = 12320.

The previous prime is 48989. The next prime is 48991. The reversal of 48990 is 9984.

It is an interprime number because it is at equal distance from previous prime (48989) and next prime (48991).

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

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 48990.

It is not an unprimeable number, because it can be changed into a prime (48991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655 + ... + 725.

It is an arithmetic number, because the mean of its divisors is an integer number (3888).

2⁴⁸⁹⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62208).

48990 is an abundant number, since it is smaller than the sum of its proper divisors (75426).

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

48990 is a wasteful number, since it uses less digits than its factorization.

48990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104.

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

The square root of 48990 is about 221.3368473617. The cubic root of 48990 is about 36.5905676073.

The spelling of 48990 in words is "forty-eight thousand, nine hundred ninety".