20486000 has 40 divisors (see below), whose sum is σ = 49539984. Its totient is φ = 8193600.

The previous prime is 20485999. The next prime is 20486023. The reversal of 20486000 is 68402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122 + ... + 7121.

Almost surely, 2^20486000 is an apocalyptic number.

20486000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20486000 is an abundant number, since it is smaller than the sum of its proper divisors (29053984).

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

20486000 is a wasteful number, since it uses less digits than its factorization.

20486000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266 (or 10250 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20486000 is about 4526.1462636552. The cubic root of 20486000 is about 273.6228672336.

The spelling of 20486000 in words is "twenty million, four hundred eighty-six thousand".