20240772 has 24 divisors (see below), whose sum is σ = 47316192. Its totient is φ = 6734400.

The previous prime is 20240749. The next prime is 20240777. The reversal of 20240772 is 27704202.

It is not an unprimeable number, because it can be changed into a prime (20240777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7072 + ... + 9512.

It is an arithmetic number, because the mean of its divisors is an integer number (1971508).

Almost surely, 2^20240772 is an apocalyptic number.

It is an amenable number.

20240772 is an abundant number, since it is smaller than the sum of its proper divisors (27075420).

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

20240772 is a wasteful number, since it uses less digits than its factorization.

20240772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3137 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20240772 is about 4498.9745498280. The cubic root of 20240772 is about 272.5266792048.

Adding to 20240772 its reverse (27704202), we get a palindrome (47944974).

It can be divided in two parts, 20240 and 772, that added together give a palindrome (21012).

The spelling of 20240772 in words is "twenty million, two hundred forty thousand, seven hundred seventy-two".