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148662990 = 232572979103
BaseRepresentation
bin10001101110001…
…10101011001110
3101100201212021200
420313012223032
5301024203430
622430210330
73453420540
oct1067065316
9340655250
10148662990
1176a09783
12419539a6
1324a51488
1415a5b690
15d0b8460
hex8dc6ace

148662990 has 192 divisors, whose sum is σ = 467251200. Its totient is φ = 32078592.

The previous prime is 148662979. The next prime is 148662991. The reversal of 148662990 is 99266841.

It is a happy number.

148662990 is a `hidden beast` number, since 14 + 8 + 6 + 629 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148662991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1443279 + ... + 1443381.

It is an arithmetic number, because the mean of its divisors is an integer number (2433600).

Almost surely, 2148662990 is an apocalyptic number.

148662990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148662990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233625600).

148662990 is an abundant number, since it is smaller than the sum of its proper divisors (318588210).

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

148662990 is a wasteful number, since it uses less digits than its factorization.

148662990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 148662990 is about 12192.7433336391. The cubic root of 148662990 is about 529.7459206976.

The spelling of 148662990 in words is "one hundred forty-eight million, six hundred sixty-two thousand, nine hundred ninety".