20403948 has 24 divisors (see below), whose sum is σ = 50115520. Its totient is φ = 6443280.

The previous prime is 20403941. The next prime is 20403953. The reversal of 20403948 is 84930402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20403941) 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, 44518 + ... + 44973.

Almost surely, 2^20403948 is an apocalyptic number.

It is an amenable number.

20403948 is an abundant number, since it is smaller than the sum of its proper divisors (29711572).

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

20403948 is a wasteful number, since it uses less digits than its factorization.

20403948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89517 (or 89515 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20403948 is about 4517.0729460570. The cubic root of 20403948 is about 273.2570670953.

It can be divided in two parts, 2040394 and 8, that added together give a palindrome (2040402).

The spelling of 20403948 in words is "twenty million, four hundred three thousand, nine hundred forty-eight".