220451292 has 72 divisors (see below), whose sum is σ = 578253312. Its totient is φ = 70740000.

The previous prime is 220451267. The next prime is 220451347. The reversal of 220451292 is 292154022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279723 + ... + 280509.

It is an arithmetic number, because the mean of its divisors is an integer number (8031296).

Almost surely, 2^220451292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220451292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289126656).

220451292 is an abundant number, since it is smaller than the sum of its proper divisors (357802020).

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

220451292 is a wasteful number, since it uses less digits than its factorization.

220451292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 220451292 is about 14847.6022306634. The cubic root of 220451292 is about 604.0935742338.

The spelling of 220451292 in words is "two hundred twenty million, four hundred fifty-one thousand, two hundred ninety-two".