20493837 has 64 divisors (see below), whose sum is σ = 39424000. Its totient is φ = 10217664.

The previous prime is 20493791. The next prime is 20493839. The reversal of 20493837 is 73839402.

It is not a de Polignac number, because 20493837 - 2⁶ = 20493773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20493839) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46464 + ... + 46902.

It is an arithmetic number, because the mean of its divisors is an integer number (616000).

Almost surely, 2^20493837 is an apocalyptic number.

20493837 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20493837 is a deficient number, since it is larger than the sum of its proper divisors (18930163).

20493837 is a wasteful number, since it uses less digits than its factorization.

20493837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 20493837 is about 4527.0119284137. The cubic root of 20493837 is about 273.6577546205.

It can be divided in two parts, 2049 and 3837, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 20493837 in words is "twenty million, four hundred ninety-three thousand, eight hundred thirty-seven".