13457770 has 8 divisors (see below), whose sum is σ = 24224004. Its totient is φ = 5383104.

The previous prime is 13457767. The next prime is 13457831. The reversal of 13457770 is 7775431.

It can be written as a sum of positive squares in 2 ways, for example, as 13198689 + 259081 = 3633^2 + 509^2 .

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

It is a super-2 number, since 2×13457770² = 362223146745800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672879 + ... + 672898.

Almost surely, 2^13457770 is an apocalyptic number.

13457770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13457770 is a deficient number, since it is larger than the sum of its proper divisors (10766234).

13457770 is a wasteful number, since it uses less digits than its factorization.

13457770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345784.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 13457770 is about 3668.4833378387. The cubic root of 13457770 is about 237.8616171744.

The spelling of 13457770 in words is "thirteen million, four hundred fifty-seven thousand, seven hundred seventy".