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70249460 = 22519223829
BaseRepresentation
bin1000010111111…
…10101111110100
311220012001010212
410023332233310
5120440440320
610545404552
71512052631
oct413765764
9156161125
1070249460
1136721506
121b639758
1311728238
149489188
1562799c5
hex42febf4

70249460 has 48 divisors (see below), whose sum is σ = 156172800. Its totient is φ = 26469504.

The previous prime is 70249453. The next prime is 70249469. The reversal of 70249460 is 6494207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70249469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84326 + ... + 85154.

It is an arithmetic number, because the mean of its divisors is an integer number (3253600).

Almost surely, 270249460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70249460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78086400).

70249460 is an abundant number, since it is smaller than the sum of its proper divisors (85923340).

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

70249460 is a wasteful number, since it uses less digits than its factorization.

70249460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 70249460 is about 8381.4950933589. The cubic root of 70249460 is about 412.6175190109.

The spelling of 70249460 in words is "seventy million, two hundred forty-nine thousand, four hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 223 380 446 829 892 1115 1658 2230 3316 4145 4237 4460 8290 8474 15751 16580 16948 21185 31502 42370 63004 78755 84740 157510 184867 315020 369734 739468 924335 1848670 3512473 3697340 7024946 14049892 17562365 35124730 70249460