20496420 has 72 divisors (see below), whose sum is σ = 71058624. Its totient is φ = 4684608.

The previous prime is 20496419. The next prime is 20496431. The reversal of 20496420 is 2469402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6874 + ... + 9393.

Almost surely, 2^20496420 is an apocalyptic number.

20496420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20496420 is an abundant number, since it is smaller than the sum of its proper divisors (50562204).

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

20496420 is a wasteful number, since it uses less digits than its factorization.

20496420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289 (or 16284 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20496420 is about 4527.2972069437. The cubic root of 20496420 is about 273.6692512196.

The spelling of 20496420 in words is "twenty million, four hundred ninety-six thousand, four hundred twenty".