2491622400 has 132 divisors (see below), whose sum is σ = 8235195632. Its totient is φ = 664412160.

The previous prime is 2491622387. The next prime is 2491622423. The reversal of 2491622400 is 42261942.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60579 + ... + 93021.

Almost surely, 2^2491622400 is an apocalyptic number.

2491622400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2491622400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4117597816).

2491622400 is an abundant number, since it is smaller than the sum of its proper divisors (5743573232).

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

2491622400 is a wasteful number, since it uses less digits than its factorization.

2491622400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32476 (or 32453 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2491622400 is about 49916.1536979764. The cubic root of 2491622400 is about 1355.6910913879.

The spelling of 2491622400 in words is "two billion, four hundred ninety-one million, six hundred twenty-two thousand, four hundred".