20072650 has 24 divisors (see below), whose sum is σ = 40208364. Its totient is φ = 7411200.

The previous prime is 20072627. The next prime is 20072651. The reversal of 20072650 is 5627002.

It can be written as a sum of positive squares in 6 ways, for example, as 9320809 + 10751841 = 3053^2 + 3279^2 .

It is a super-2 number, since 2×20072650² = 805822556045000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20072651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14791 + ... + 16090.

Almost surely, 2^20072650 is an apocalyptic number.

20072650 is an abundant number, since it is smaller than the sum of its proper divisors (20135714).

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

20072650 is a wasteful number, since it uses less digits than its factorization.

20072650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30906 (or 30901 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20072650 is about 4480.2511090340. The cubic root of 20072650 is about 271.7700352283.

Adding to 20072650 its reverse (5627002), we get a palindrome (25699652).

The spelling of 20072650 in words is "twenty million, seventy-two thousand, six hundred fifty".