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149493580 = 22517439687
BaseRepresentation
bin10001110100100…
…01011101001100
3101102022001122021
420322101131030
5301232243310
622500055524
73463450225
oct1072213514
9342261567
10149493580
1177426815
12420945a4
1324c82552
1415bd624c
15d1ce5da
hex8e9174c

149493580 has 24 divisors (see below), whose sum is σ = 332404128. Its totient is φ = 56279808.

The previous prime is 149493569. The next prime is 149493611. The reversal of 149493580 is 85394941.

It is a happy number.

149493580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1494935802 = 44696660922432800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 219504 + ... + 220183.

It is an arithmetic number, because the mean of its divisors is an integer number (13850172).

Almost surely, 2149493580 is an apocalyptic number.

149493580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149493580 is an abundant number, since it is smaller than the sum of its proper divisors (182910548).

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

149493580 is a wasteful number, since it uses less digits than its factorization.

149493580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439713 (or 439711 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 149493580 is about 12226.7567244957. The cubic root of 149493580 is about 530.7306642414.

The spelling of 149493580 in words is "one hundred forty-nine million, four hundred ninety-three thousand, five hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 439687 879374 1758748 2198435 4396870 7474679 8793740 14949358 29898716 37373395 74746790 149493580