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1407484221 = 311213222943
BaseRepresentation
bin101001111100100…
…1000000100111101
310122002102121101020
41103321020010331
510340303443341
6351355134353
746610263353
oct12371100475
93562377336
101407484221
11662540800
123334443b9
1319579c200
14d4cdd7d3
1583872566
hex53e4813d

1407484221 has 36 divisors (see below), whose sum is σ = 2233736064. Its totient is φ = 787369440.

The previous prime is 1407484189. The next prime is 1407484229. The reversal of 1407484221 is 1224847041.

It is not a de Polignac number, because 1407484221 - 25 = 1407484189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1407484229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49876 + ... + 72818.

It is an arithmetic number, because the mean of its divisors is an integer number (62048224).

Almost surely, 21407484221 is an apocalyptic number.

1407484221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1407484221 is a deficient number, since it is larger than the sum of its proper divisors (826251843).

1407484221 is a wasteful number, since it uses less digits than its factorization.

1407484221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22994 (or 22970 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 1407484221 is about 37516.4526707950. The cubic root of 1407484221 is about 1120.6788563576.

The spelling of 1407484221 in words is "one billion, four hundred seven million, four hundred eighty-four thousand, two hundred twenty-one".

Divisors: 1 3 11 13 33 39 121 143 169 363 429 507 1573 1859 4719 5577 20449 22943 61347 68829 252373 298259 757119 894777 2776103 3280849 3877367 8328309 9842547 11632101 36089339 42651037 108268017 127953111 469161407 1407484221