20474587 has 8 divisors (see below), whose sum is σ = 23433696. Its totient is φ = 17524032.

The previous prime is 20474581. The next prime is 20474591. The reversal of 20474587 is 78547402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20474587 - 2⁷ = 20474459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20474581) 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, 4293 + ... + 7705.

It is an arithmetic number, because the mean of its divisors is an integer number (2929212).

Almost surely, 2^20474587 is an apocalyptic number.

20474587 is a deficient number, since it is larger than the sum of its proper divisors (2959109).

20474587 is an equidigital number, since it uses as much as digits as its factorization.

20474587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 20474587 is about 4524.8853024138. The cubic root of 20474587 is about 273.5720449177.

The spelling of 20474587 in words is "twenty million, four hundred seventy-four thousand, five hundred eighty-seven".