20738982 has 16 divisors (see below), whose sum is σ = 45248832. Its totient is φ = 6284520.

The previous prime is 20738957. The next prime is 20738987. The reversal of 20738982 is 28983702.

It is a self number, because there is not a number n which added to its sum of digits gives 20738982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738987) 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, 157048 + ... + 157179.

It is an arithmetic number, because the mean of its divisors is an integer number (2828052).

Almost surely, 2^20738982 is an apocalyptic number.

20738982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20738982 is an abundant number, since it is smaller than the sum of its proper divisors (24509850).

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

20738982 is a wasteful number, since it uses less digits than its factorization.

20738982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314243.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 20738982 is about 4554.0072463710. The cubic root of 20738982 is about 274.7445870949.

The spelling of 20738982 in words is "twenty million, seven hundred thirty-eight thousand, nine hundred eighty-two".