622408254 has 64 divisors (see below), whose sum is σ = 1370537280. Its totient is φ = 187269120.

The previous prime is 622408247. The next prime is 622408271. The reversal of 622408254 is 452804226.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1222552 + ... + 1223060.

It is an arithmetic number, because the mean of its divisors is an integer number (21414645).

Almost surely, 2^622408254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622408254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685268640).

622408254 is an abundant number, since it is smaller than the sum of its proper divisors (748129026).

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

622408254 is a wasteful number, since it uses less digits than its factorization.

622408254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 622408254 is about 24948.1112311133. Note that the first 3 decimals coincide. The cubic root of 622408254 is about 853.8045164253.

The spelling of 622408254 in words is "six hundred twenty-two million, four hundred eight thousand, two hundred fifty-four".