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1238504070 = 23541283469
BaseRepresentation
bin100100111010010…
…0001001010000110
310012022110112012010
41021310201022012
510014024112240
6322521235050
742456053016
oct11164411206
93168415163
101238504070
11586115491
122a6932a86
1316978615b
14ba6b3c46
1573ae4280
hex49d21286

1238504070 has 16 divisors (see below), whose sum is σ = 2972409840. Its totient is φ = 330267744.

The previous prime is 1238504063. The next prime is 1238504119. The reversal of 1238504070 is 704058321.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 41283469 = 1238504070 / (1 + 2 + 3 + 8 + 5 + 0 + 4 + 0 + 7 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20641705 + ... + 20641764.

It is an arithmetic number, because the mean of its divisors is an integer number (185775615).

Almost surely, 21238504070 is an apocalyptic number.

1238504070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1238504070 is an abundant number, since it is smaller than the sum of its proper divisors (1733905770).

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

1238504070 is a wasteful number, since it uses less digits than its factorization.

1238504070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41283479.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1238504070 is about 35192.3865345901. The cubic root of 1238504070 is about 1073.9048721268.

The spelling of 1238504070 in words is "one billion, two hundred thirty-eight million, five hundred four thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 41283469 82566938 123850407 206417345 247700814 412834690 619252035 1238504070