1210990 has 32 divisors (see below), whose sum is σ = 2423520. Its totient is φ = 432000.

The previous prime is 1210987. The next prime is 1210999. The reversal of 1210990 is 990121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210999) 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, 11056 + ... + 11164.

It is an arithmetic number, because the mean of its divisors is an integer number (75735).

2^1210990 is an apocalyptic number.

1210990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210990 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1210990 is a wasteful number, since it uses less digits than its factorization.

1210990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1210990 is about 1100.4499079922. The cubic root of 1210990 is about 106.5892776335.

The spelling of 1210990 in words is "one million, two hundred ten thousand, nine hundred ninety".