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149253807 = 3291715561
BaseRepresentation
bin10001110010101…
…10111010101111
3101101211212201210
420321112322233
5301202110212
622451005503
73461431203
oct1071267257
9341755653
10149253807
117728265a
1241b99893
1324bca381
1415b72b03
15d18353c
hex8e56eaf

149253807 has 8 divisors (see below), whose sum is σ = 205867440. Its totient is φ = 96071360.

The previous prime is 149253791. The next prime is 149253833. The reversal of 149253807 is 708352941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149253807 - 24 = 149253791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149253707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857694 + ... + 857867.

It is an arithmetic number, because the mean of its divisors is an integer number (25733430).

Almost surely, 2149253807 is an apocalyptic number.

149253807 is a deficient number, since it is larger than the sum of its proper divisors (56613633).

149253807 is a wasteful number, since it uses less digits than its factorization.

149253807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715593.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 149253807 is about 12216.9475320147. The cubic root of 149253807 is about 530.4467658091.

The spelling of 149253807 in words is "one hundred forty-nine million, two hundred fifty-three thousand, eight hundred seven".

Divisors: 1 3 29 87 1715561 5146683 49751269 149253807