220951490 has 8 divisors (see below), whose sum is σ = 397712700. Its totient is φ = 88380592.

The previous prime is 220951463. The next prime is 220951517. The reversal of 220951490 is 94159022.

It is an interprime number because it is at equal distance from previous prime (220951463) and next prime (220951517).

It can be written as a sum of positive squares in 2 ways, for example, as 208426969 + 12524521 = 14437^2 + 3539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 11047565 + ... + 11047584.

Almost surely, 2^220951490 is an apocalyptic number.

220951490 is a deficient number, since it is larger than the sum of its proper divisors (176761210).

220951490 is a wasteful number, since it uses less digits than its factorization.

220951490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095156.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 220951490 is about 14864.4370899136. The cubic root of 220951490 is about 604.5501197542.

The spelling of 220951490 in words is "two hundred twenty million, nine hundred fifty-one thousand, four hundred ninety".