16742493 has 6 divisors (see below), whose sum is σ = 24183614. Its totient is φ = 11161656.

The previous prime is 16742471. The next prime is 16742503. The reversal of 16742493 is 39424761.

16742493 is a `hidden beast` number, since 167 + 4 + 2 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9108324 + 7634169 = 3018^2 + 2763^2 .

It is not a de Polignac number, because 16742493 - 2⁵ = 16742461 is a prime.

It is a super-2 number, since 2×16742493² = 560622143710098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16742423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 930130 + ... + 930147.

Almost surely, 2^16742493 is an apocalyptic number.

It is an amenable number.

16742493 is a deficient number, since it is larger than the sum of its proper divisors (7441121).

16742493 is a wasteful number, since it uses less digits than its factorization.

16742493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860283 (or 1860280 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 16742493 is about 4091.7591571352. The cubic root of 16742493 is about 255.8232677082.

The spelling of 16742493 in words is "sixteen million, seven hundred forty-two thousand, four hundred ninety-three".