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981485830 = 25137739767
BaseRepresentation
bin111010100000000…
…100100100000110
32112101211122110001
4322200010210012
54002230021310
6241220351514
733215330503
oct7240044406
92471748401
10981485830
11464028916
1223484559a
13128457160
14944cc4aa
155b27593a
hex3a804906

981485830 has 32 divisors (see below), whose sum is σ = 1905228864. Its totient is φ = 361888896.

The previous prime is 981485821. The next prime is 981485891. The reversal of 981485830 is 38584189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95607 + ... + 105373.

It is an arithmetic number, because the mean of its divisors is an integer number (59538402).

Almost surely, 2981485830 is an apocalyptic number.

981485830 is a deficient number, since it is larger than the sum of its proper divisors (923743034).

981485830 is a wasteful number, since it uses less digits than its factorization.

981485830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 981485830 is about 31328.6742458087. The cubic root of 981485830 is about 993.7901273039.

The spelling of 981485830 in words is "nine hundred eighty-one million, four hundred eighty-five thousand, eight hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 773 1546 3865 7730 9767 10049 19534 20098 48835 50245 97670 100490 126971 253942 634855 1269710 7549891 15099782 37749455 75498910 98148583 196297166 490742915 981485830