1248990 has 64 divisors (see below), whose sum is σ = 3317760. Its totient is φ = 299520.

The previous prime is 1248979. The next prime is 1248991. The reversal of 1248990 is 998421.

1248990 is a nontrivial binomial coefficient, being equal to C(1581, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248991) 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, 15771 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2^1248990 is an apocalyptic number.

1248990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1248990 is the 1580-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1248990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658880).

1248990 is an abundant number, since it is smaller than the sum of its proper divisors (2068770).

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

1248990 is a wasteful number, since it uses less digits than its factorization.

1248990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1248990 is about 1117.5822117410. The cubic root of 1248990 is about 107.6927136301.

The spelling of 1248990 in words is "one million, two hundred forty-eight thousand, nine hundred ninety".