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67620492 = 223217110491
BaseRepresentation
bin1000000011111…
…00111010001100
311201020110212200
410001330322030
5114302323432
610413201500
71450523202
oct401747214
9151213780
1067620492
1135196305
121a790290
1311017734
148da3072
155e0aa7c
hex407ce8c

67620492 has 36 divisors (see below), whose sum is σ = 180985896. Its totient is φ = 21214080.

The previous prime is 67620491. The next prime is 67620493. The reversal of 67620492 is 29402676.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67620491) and next prime (67620493).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (67620491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54634 + ... + 55857.

It is an arithmetic number, because the mean of its divisors is an integer number (5027386).

Almost surely, 267620492 is an apocalyptic number.

It is an amenable number.

67620492 is an abundant number, since it is smaller than the sum of its proper divisors (113365404).

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

67620492 is a wasteful number, since it uses less digits than its factorization.

67620492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110518 (or 110513 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 67620492 is about 8223.1680026617. The cubic root of 67620492 is about 407.4047692958.

The spelling of 67620492 in words is "sixty-seven million, six hundred twenty thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 17 18 34 36 51 68 102 153 204 306 612 110491 220982 331473 441964 662946 994419 1325892 1878347 1988838 3756694 3977676 5635041 7513388 11270082 16905123 22540164 33810246 67620492