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149053420 = 22511936247
BaseRepresentation
bin10001110001001…
…01111111101100
3101101110200212001
420320211333230
5301124202140
622442422044
73456635035
oct1070457754
9341420761
10149053420
117715604a
1241b01924
1324b5a0b9
1415b1da8c
15d143e9a
hex8e25fec

149053420 has 24 divisors (see below), whose sum is σ = 313324704. Its totient is φ = 59561856.

The previous prime is 149053393. The next prime is 149053447. The reversal of 149053420 is 24350941.

It is an interprime number because it is at equal distance from previous prime (149053393) and next prime (149053447).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20737 + ... + 26983.

It is an arithmetic number, because the mean of its divisors is an integer number (13055196).

Almost surely, 2149053420 is an apocalyptic number.

149053420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149053420 is an abundant number, since it is smaller than the sum of its proper divisors (164271284).

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

149053420 is a wasteful number, since it uses less digits than its factorization.

149053420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449 (or 7447 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 149053420 is about 12208.7435881011. The cubic root of 149053420 is about 530.2092682564.

The spelling of 149053420 in words is "one hundred forty-nine million, fifty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1193 2386 4772 5965 6247 11930 12494 23860 24988 31235 62470 124940 7452671 14905342 29810684 37263355 74526710 149053420