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145903460 = 22559612027
BaseRepresentation
bin10001011001001…
…00111101100100
3101011112122220212
420230210331210
5244322402320
622251114552
73421105343
oct1054447544
9334478825
10145903460
11753a447a
1240a42a58
13242c6411
141553db5a
15cc209c5
hex8b24f64

145903460 has 48 divisors (see below), whose sum is σ = 316854720. Its totient is φ = 56403840.

The previous prime is 145903447. The next prime is 145903481. The reversal of 145903460 is 64309541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70967 + ... + 72993.

It is an arithmetic number, because the mean of its divisors is an integer number (6601140).

Almost surely, 2145903460 is an apocalyptic number.

145903460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145903460 is an abundant number, since it is smaller than the sum of its proper divisors (170951260).

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

145903460 is a wasteful number, since it uses less digits than its factorization.

145903460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 145903460 is about 12079.0504593697. The cubic root of 145903460 is about 526.4476568073.

The spelling of 145903460 in words is "one hundred forty-five million, nine hundred three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 59 61 118 122 236 244 295 305 590 610 1180 1220 2027 3599 4054 7198 8108 10135 14396 17995 20270 35990 40540 71980 119593 123647 239186 247294 478372 494588 597965 618235 1195930 1236470 2391860 2472940 7295173 14590346 29180692 36475865 72951730 145903460