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71409696 = 253743851
BaseRepresentation
bin1000100000110…
…10000000100000
311222100222200120
410100122000200
5121240102241
611030320240
71524654351
oct420320040
9158328616
1071409696
1137344186
121bab9080
1311a43377
1496abd28
156408666
hex441a020

71409696 has 24 divisors (see below), whose sum is σ = 187450704. Its totient is φ = 23803200.

The previous prime is 71409691. The next prime is 71409703. The reversal of 71409696 is 69690417.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (71409691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371830 + ... + 372021.

It is an arithmetic number, because the mean of its divisors is an integer number (7810446).

Almost surely, 271409696 is an apocalyptic number.

It is an amenable number.

71409696 is an abundant number, since it is smaller than the sum of its proper divisors (116041008).

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

71409696 is a wasteful number, since it uses less digits than its factorization.

71409696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743864 (or 743856 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 71409696 is about 8450.4257880890. The cubic root of 71409696 is about 414.8767156899.

It can be divided in two parts, 7140 and 9696, that added together give a triangular number (16836 = T183).

The spelling of 71409696 in words is "seventy-one million, four hundred nine thousand, six hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 743851 1487702 2231553 2975404 4463106 5950808 8926212 11901616 17852424 23803232 35704848 71409696