17420770 has 8 divisors (see below), whose sum is σ = 31357404. Its totient is φ = 6968304.

The previous prime is 17420761. The next prime is 17420797. The reversal of 17420770 is 7702471.

It can be written as a sum of positive squares in 2 ways, for example, as 14493249 + 2927521 = 3807^2 + 1711^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871029 + ... + 871048.

Almost surely, 2^17420770 is an apocalyptic number.

17420770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17420770 is a deficient number, since it is larger than the sum of its proper divisors (13936634).

17420770 is a wasteful number, since it uses less digits than its factorization.

17420770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742084.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 17420770 is about 4173.8195936097. The cubic root of 17420770 is about 259.2323015331.

The spelling of 17420770 in words is "seventeen million, four hundred twenty thousand, seven hundred seventy".