2251402464 has 24 divisors (see below), whose sum is σ = 5909931720. Its totient is φ = 750467456.

The previous prime is 2251402459. The next prime is 2251402477. The reversal of 2251402464 is 4642041522.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11725959 + ... + 11726150.

It is an arithmetic number, because the mean of its divisors is an integer number (246247155).

Almost surely, 2^2251402464 is an apocalyptic number.

2251402464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2251402464 is an abundant number, since it is smaller than the sum of its proper divisors (3658529256).

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

2251402464 is a wasteful number, since it uses less digits than its factorization.

2251402464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23452122 (or 23452114 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 2251402464 is about 47448.9458681644. The cubic root of 2251402464 is about 1310.6428994790.

Adding to 2251402464 its reverse (4642041522), we get a palindrome (6893443986).

The spelling of 2251402464 in words is "two billion, two hundred fifty-one million, four hundred two thousand, four hundred sixty-four".