20527830 has 40 divisors (see below), whose sum is σ = 55199232. Its totient is φ = 5473872.

The previous prime is 20527817. The next prime is 20527849. The reversal of 20527830 is 3872502.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20527794 and 20527803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11862 + ... + 13481.

Almost surely, 2^20527830 is an apocalyptic number.

20527830 is an abundant number, since it is smaller than the sum of its proper divisors (34671402).

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

20527830 is a wasteful number, since it uses less digits than its factorization.

20527830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25362 (or 25353 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20527830 is about 4530.7648360956. The cubic root of 20527830 is about 273.8089758467.

The spelling of 20527830 in words is "twenty million, five hundred twenty-seven thousand, eight hundred thirty".