2421772240 has 20 divisors (see below), whose sum is σ = 5630620644. Its totient is φ = 968708864.

The previous prime is 2421772219. The next prime is 2421772253. The reversal of 2421772240 is 422771242.

It can be written as a sum of positive squares in 2 ways, for example, as 362064784 + 2059707456 = 19028^2 + 45384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15135997 + ... + 15136156.

Almost surely, 2^2421772240 is an apocalyptic number.

2421772240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421772240 is an abundant number, since it is smaller than the sum of its proper divisors (3208848404).

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

2421772240 is a wasteful number, since it uses less digits than its factorization.

2421772240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30272166 (or 30272160 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 2421772240 is about 49211.5051588549. The cubic root of 2421772240 is about 1342.9023451123.

The spelling of 2421772240 in words is "two billion, four hundred twenty-one million, seven hundred seventy-two thousand, two hundred forty".