1230690 has 16 divisors (see below), whose sum is σ = 2953728. Its totient is φ = 328176.

The previous prime is 1230689. The next prime is 1230727. The reversal of 1230690 is 960321.

It is a super-2 number, since 2×1230690² = 3029195752200, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20482 + ... + 20541.

It is an arithmetic number, because the mean of its divisors is an integer number (184608).

2^1230690 is an apocalyptic number.

1230690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230690 is an abundant number, since it is smaller than the sum of its proper divisors (1723038).

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

1230690 is a wasteful number, since it uses less digits than its factorization.

1230690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41033.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1230690 is about 1109.3646830506. The cubic root of 1230690 is about 107.1641583045.

The spelling of 1230690 in words is "one million, two hundred thirty thousand, six hundred ninety".