1229770 has 16 divisors (see below), whose sum is σ = 2285568. Its totient is φ = 475920.

The previous prime is 1229743. The next prime is 1229773. The reversal of 1229770 is 779221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1229773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (142848).

2^1229770 is an apocalyptic number.

1229770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1229770 is a deficient number, since it is larger than the sum of its proper divisors (1055798).

1229770 is a wasteful number, since it uses less digits than its factorization.

1229770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1229770 is about 1108.9499537851. The cubic root of 1229770 is about 107.1374481926.

The spelling of 1229770 in words is "one million, two hundred twenty-nine thousand, seven hundred seventy".