11420690 has 8 divisors (see below), whose sum is σ = 20557260. Its totient is φ = 4568272.

The previous prime is 11420687. The next prime is 11420699. The reversal of 11420690 is 9602411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10883401 + 537289 = 3299^2 + 733^2 .

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

It is a super-2 number, since 2×11420690² = 260864320152200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11420699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571025 + ... + 571044.

Almost surely, 2^11420690 is an apocalyptic number.

11420690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11420690 is a deficient number, since it is larger than the sum of its proper divisors (9136570).

11420690 is a wasteful number, since it uses less digits than its factorization.

11420690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142076.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 11420690 is about 3379.4511388686. The cubic root of 11420690 is about 225.1977849351.

The spelling of 11420690 in words is "eleven million, four hundred twenty thousand, six hundred ninety".