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1230424 = 231311831
BaseRepresentation
bin100101100011001011000
32022111211021
410230121120
5303333144
642212224
713313146
oct4543130
92274737
101230424
11770488
124b4074
13341080
14240596
15194884
hex12c658

1230424 has 16 divisors (see below), whose sum is σ = 2484720. Its totient is φ = 567840.

The previous prime is 1230401. The next prime is 1230433. The reversal of 1230424 is 4240321.

1230424 = T202 + T203 + ... + T249.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1230398 and 1230407.

It is a congruent number.

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, 5812 + ... + 6019.

It is an arithmetic number, because the mean of its divisors is an integer number (155295).

21230424 is an apocalyptic number.

It is an amenable number.

1230424 is an abundant number, since it is smaller than the sum of its proper divisors (1254296).

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

1230424 is a wasteful number, since it uses less digits than its factorization.

1230424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850 (or 11846 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1230424 is about 1109.2447881329. The cubic root of 1230424 is about 107.1564369666.

Adding to 1230424 its reverse (4240321), we get a palindrome (5470745).

It can be divided in two parts, 12304 and 24, that multiplied together give a triangular number (295296 = T768).

The spelling of 1230424 in words is "one million, two hundred thirty thousand, four hundred twenty-four".

Divisors: 1 2 4 8 13 26 52 104 11831 23662 47324 94648 153803 307606 615212 1230424