20541530628 has 36 divisors (see below), whose sum is σ = 52185369600. Its totient is φ = 6812766576.

The previous prime is 20541530579. The next prime is 20541530701. The reversal of 20541530628 is 82603514502.

20541530628 is a `hidden beast` number, since 2 + 0 + 541 + 53 + 0 + 62 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20541530592 and 20541530601.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1426500 + ... + 1440827.

It is an arithmetic number, because the mean of its divisors is an integer number (1449593600).

Almost surely, 2^20541530628 is an apocalyptic number.

It is an amenable number.

20541530628 is an abundant number, since it is smaller than the sum of its proper divisors (31643838972).

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

20541530628 is a wasteful number, since it uses less digits than its factorization.

20541530628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867536 (or 2867531 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20541530628 in words is "twenty billion, five hundred forty-one million, five hundred thirty thousand, six hundred twenty-eight".