16738420 has 12 divisors (see below), whose sum is σ = 35150724. Its totient is φ = 6695360.

The previous prime is 16738399. The next prime is 16738459. The reversal of 16738420 is 2483761.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 14107536 = 1622^2 + 3756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418441 + ... + 418480.

It is an arithmetic number, because the mean of its divisors is an integer number (2929227).

Almost surely, 2^16738420 is an apocalyptic number.

16738420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16738420 is an abundant number, since it is smaller than the sum of its proper divisors (18412304).

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

16738420 is a wasteful number, since it uses less digits than its factorization.

16738420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836930 (or 836928 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 16738420 is about 4091.2614191714. The cubic root of 16738420 is about 255.8025210433.

The spelling of 16738420 in words is "sixteen million, seven hundred thirty-eight thousand, four hundred twenty".