20474837 has 12 divisors (see below), whose sum is σ = 22128480. Its totient is φ = 18931752.

The previous prime is 20474827. The next prime is 20474869. The reversal of 20474837 is 73847402.

It is not a de Polignac number, because 20474837 - 2⁸ = 20474581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20474797 and 20474806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20474827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14864 + ... + 16182.

It is an arithmetic number, because the mean of its divisors is an integer number (1844040).

Almost surely, 2^20474837 is an apocalyptic number.

It is an amenable number.

20474837 is a deficient number, since it is larger than the sum of its proper divisors (1653643).

20474837 is a wasteful number, since it uses less digits than its factorization.

20474837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 20474837 is about 4524.9129273390. The cubic root of 20474837 is about 273.5731583750.

The spelling of 20474837 in words is "twenty million, four hundred seventy-four thousand, eight hundred thirty-seven".