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130710720 = 2635753367
BaseRepresentation
bin1111100101001…
…11110011000000
3100002221210101210
413302213303000
5231430220340
620545330120
73145010550
oct762476300
9302853353
10130710720
1167867998
1237936940
132110712a
1413507160
15b71e180
hex7ca7cc0

130710720 has 224 divisors, whose sum is σ = 484558848. Its totient is φ = 29233152.

The previous prime is 130710719. The next prime is 130710721. The reversal of 130710720 is 27017031.

It is an interprime number because it is at equal distance from previous prime (130710719) and next prime (130710721).

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130710721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355977 + ... + 356343.

Almost surely, 2130710720 is an apocalyptic number.

130710720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130710720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242279424).

130710720 is an abundant number, since it is smaller than the sum of its proper divisors (353848128).

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

130710720 is a wasteful number, since it uses less digits than its factorization.

130710720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 130710720 is about 11432.8789025337. The cubic root of 130710720 is about 507.5011947200.

Adding to 130710720 its reverse (27017031), we get a palindrome (157727751).

The spelling of 130710720 in words is "one hundred thirty million, seven hundred ten thousand, seven hundred twenty".