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1224880969 = 13137687749
BaseRepresentation
bin100100100000010…
…0011001101001001
310011100211101210211
41021000203031021
510002032142334
6321313241121
742232213354
oct11100431511
93140741724
101224880969
11579460224
122a22631a1
131669c6450
14b896929b
1572802a64
hex49023349

1224880969 has 8 divisors (see below), whose sum is σ = 1328733000. Its totient is φ = 1122404736.

The previous prime is 1224880949. The next prime is 1224880997. The reversal of 1224880969 is 9690884221.

It can be written as a sum of positive squares in 4 ways, for example, as 14745600 + 1210135369 = 3840^2 + 34787^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1224880969 - 29 = 1224880457 is a prime.

It is a super-2 number, since 2×12248809692 = 3000666776436757922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224880949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342094 + ... + 345655.

It is an arithmetic number, because the mean of its divisors is an integer number (166091625).

Almost surely, 21224880969 is an apocalyptic number.

It is an amenable number.

1224880969 is a deficient number, since it is larger than the sum of its proper divisors (103852031).

1224880969 is a wasteful number, since it uses less digits than its factorization.

1224880969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687899.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 1224880969 is about 34998.2995158336. The cubic root of 1224880969 is about 1069.9528232031.

The spelling of 1224880969 in words is "one billion, two hundred twenty-four million, eight hundred eighty thousand, nine hundred sixty-nine".

Divisors: 1 13 137 1781 687749 8940737 94221613 1224880969