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1220040230 = 25122004023
BaseRepresentation
bin100100010111000…
…0101011000100110
310011000201110120012
41020232011120212
54444312241410
6321021410222
742143112413
oct11056053046
93130643505
101220040230
11576754312
122a0709972
131659bccc6
14b806910a
1572198605
hex48b85626

1220040230 has 8 divisors (see below), whose sum is σ = 2196072432. Its totient is φ = 488016088.

The previous prime is 1220040229. The next prime is 1220040233. The reversal of 1220040230 is 320400221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220040233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61002002 + ... + 61002021.

It is an arithmetic number, because the mean of its divisors is an integer number (274509054).

Almost surely, 21220040230 is an apocalyptic number.

1220040230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220040230 is a deficient number, since it is larger than the sum of its proper divisors (976032202).

1220040230 is a wasteful number, since it uses less digits than its factorization.

1220040230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122004030.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1220040230 is about 34929.0742791732. The cubic root of 1220040230 is about 1068.5414750884.

Adding to 1220040230 its reverse (320400221), we get a palindrome (1540440451).

The spelling of 1220040230 in words is "one billion, two hundred twenty million, forty thousand, two hundred thirty".

Divisors: 1 2 5 10 122004023 244008046 610020115 1220040230