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67969420 = 2253398471
BaseRepresentation
bin1000000110100…
…10000110001100
311201220012111221
410003102012030
5114400010140
610424453124
71453505401
oct403220614
9151805457
1067969420
1135404482
121a91a1a4
131110a4bc
1490542a8
155e7914a
hex40d218c

67969420 has 12 divisors (see below), whose sum is σ = 142735824. Its totient is φ = 27187760.

The previous prime is 67969409. The next prime is 67969459. The reversal of 67969420 is 2496976.

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, 1699216 + ... + 1699255.

It is an arithmetic number, because the mean of its divisors is an integer number (11894652).

Almost surely, 267969420 is an apocalyptic number.

It is an amenable number.

67969420 is an abundant number, since it is smaller than the sum of its proper divisors (74766404).

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

67969420 is a wasteful number, since it uses less digits than its factorization.

67969420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398480 (or 3398478 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 67969420 is about 8244.3568578756. The cubic root of 67969420 is about 408.1043162074.

The spelling of 67969420 in words is "sixty-seven million, nine hundred sixty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 3398471 6796942 13593884 16992355 33984710 67969420