20210528290 has 8 divisors (see below), whose sum is σ = 36378950940. Its totient is φ = 8084211312.

The previous prime is 20210528257. The next prime is 20210528291. The reversal of 20210528290 is 9282501202.

It can be written as a sum of positive squares in 2 ways, for example, as 19622126241 + 588402049 = 140079^2 + 24257^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20210528291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010526405 + ... + 1010526424.

Almost surely, 2^20210528290 is an apocalyptic number.

20210528290 is a deficient number, since it is larger than the sum of its proper divisors (16168422650).

20210528290 is a wasteful number, since it uses less digits than its factorization.

20210528290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021052836.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 20210528290 in words is "twenty billion, two hundred ten million, five hundred twenty-eight thousand, two hundred ninety".