16427730 has 64 divisors (see below), whose sum is σ = 43711488. Its totient is φ = 3917760.

The previous prime is 16427713. The next prime is 16427731. The reversal of 16427730 is 3772461.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16427731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21739 + ... + 22481.

It is an arithmetic number, because the mean of its divisors is an integer number (682992).

Almost surely, 2^16427730 is an apocalyptic number.

16427730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16427730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21855744).

16427730 is an abundant number, since it is smaller than the sum of its proper divisors (27283758).

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

16427730 is a wasteful number, since it uses less digits than its factorization.

16427730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 16427730 is about 4053.1136179486. The cubic root of 16427730 is about 254.2099345253.

The spelling of 16427730 in words is "sixteen million, four hundred twenty-seven thousand, seven hundred thirty".