1220738 has 8 divisors (see below), whose sum is σ = 1836432. Its totient is φ = 608596.

The previous prime is 1220729. The next prime is 1220743. The reversal of 1220738 is 8370221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (229554).

2^1220738 is an apocalyptic number.

1220738 is a deficient number, since it is larger than the sum of its proper divisors (615694).

1220738 is a wasteful number, since it uses less digits than its factorization.

1220738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1220738 is about 1104.8701281146. The cubic root of 1220738 is about 106.8745144353.

Adding to 1220738 its reverse (8370221), we get a palindrome (9590959).

The spelling of 1220738 in words is "one million, two hundred twenty thousand, seven hundred thirty-eight".