20469738 has 16 divisors (see below), whose sum is σ = 40983840. Its totient is φ = 6815856.

The previous prime is 20469731. The next prime is 20469739. The reversal of 20469738 is 83796402.

It is a junction number, because it is equal to n+sod(n) for n = 20469696 and 20469705.

It is not an unprimeable number, because it can be changed into a prime (20469731) 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, 9781 + ... + 11687.

It is an arithmetic number, because the mean of its divisors is an integer number (2561490).

Almost surely, 2^20469738 is an apocalyptic number.

20469738 is an abundant number, since it is smaller than the sum of its proper divisors (20514102).

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

20469738 is a wasteful number, since it uses less digits than its factorization.

20469738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20469738 is about 4524.3494559992. The cubic root of 20469738 is about 273.5504465076.

The spelling of 20469738 in words is "twenty million, four hundred sixty-nine thousand, seven hundred thirty-eight".