16742428 has 24 divisors (see below), whose sum is σ = 29917440. Its totient is φ = 8196720.

The previous prime is 16742423. The next prime is 16742431. The reversal of 16742428 is 82424761.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16742393 and 16742402.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69933 + ... + 70171.

It is an arithmetic number, because the mean of its divisors is an integer number (1246560).

Almost surely, 2^16742428 is an apocalyptic number.

It is an amenable number.

16742428 is a deficient number, since it is larger than the sum of its proper divisors (13175012).

16742428 is a wasteful number, since it uses less digits than its factorization.

16742428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 16742428 is about 4091.7512143335. The cubic root of 16742428 is about 255.8229366437.

The spelling of 16742428 in words is "sixteen million, seven hundred forty-two thousand, four hundred twenty-eight".