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7408106421 = 37931257833
BaseRepresentation
bin1101110011000111…
…01011101110110101
3201010021122210112220
412321203223232311
5110132433401141
63223033232553
7351402602622
oct67143535665
921107583486
107408106421
113161757001
121528b62759
13910a25231
14503c31349
152d557e766
hex1b98ebbb5

7408106421 has 8 divisors (see below), whose sum is σ = 10002506880. Its totient is φ = 4876221792.

The previous prime is 7408106413. The next prime is 7408106423. The reversal of 7408106421 is 1246018047.

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

It is not a de Polignac number, because 7408106421 - 23 = 7408106413 is a prime.

It is a super-2 number, since 2×74081064212 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7408106423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15628680 + ... + 15629153.

It is an arithmetic number, because the mean of its divisors is an integer number (1250313360).

Almost surely, 27408106421 is an apocalyptic number.

It is an amenable number.

7408106421 is a deficient number, since it is larger than the sum of its proper divisors (2594400459).

7408106421 is a wasteful number, since it uses less digits than its factorization.

7408106421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31257915.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 7408106421 is about 86070.3573885923. The cubic root of 7408106421 is about 1949.4064747242.

The spelling of 7408106421 in words is "seven billion, four hundred eight million, one hundred six thousand, four hundred twenty-one".

Divisors: 1 3 79 237 31257833 93773499 2469368807 7408106421