16442730 has 32 divisors (see below), whose sum is σ = 43848000. Its totient is φ = 4384656.

The previous prime is 16442729. The next prime is 16442731. The reversal of 16442730 is 3724461.

It is an interprime number because it is at equal distance from previous prime (16442729) and next prime (16442731).

It is a super-3 number, since 3×16442730³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 16442694 and 16442703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30180 + ... + 30719.

It is an arithmetic number, because the mean of its divisors is an integer number (1370250).

Almost surely, 2^16442730 is an apocalyptic number.

16442730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16442730 is an abundant number, since it is smaller than the sum of its proper divisors (27405270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16442730 is a wasteful number, since it uses less digits than its factorization.

16442730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60915 (or 60909 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 16442730 is about 4054.9636249910. The cubic root of 16442730 is about 254.2872831917.

The spelling of 16442730 in words is "sixteen million, four hundred forty-two thousand, seven hundred thirty".