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152020146 = 2329979007
BaseRepresentation
bin10010000111110…
…10010010110010
3101121001102102210
421003322102302
5302404121041
623030152550
73524102265
oct1103722262
9347042383
10152020146
11788a1a93
1242ab2756
1325658565
1416292cdc
15d52d016
hex90fa4b2

152020146 has 32 divisors (see below), whose sum is σ = 317802240. Its totient is φ = 48416256.

The previous prime is 152020139. The next prime is 152020163. The reversal of 152020146 is 641020251.

It is a super-2 number, since 2×1520201462 = 46220249579722632, which contains 22 as substring.

It is a Curzon number.

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, 12375 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (9931320).

Almost surely, 2152020146 is an apocalyptic number.

152020146 is an abundant number, since it is smaller than the sum of its proper divisors (165782094).

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

152020146 is a wasteful number, since it uses less digits than its factorization.

152020146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 152020146 is about 12329.6450070552. The cubic root of 152020146 is about 533.7039066061.

Adding to 152020146 its reverse (641020251), we get a palindrome (793040397).

The spelling of 152020146 in words is "one hundred fifty-two million, twenty thousand, one hundred forty-six".