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152979444 = 22324249429
BaseRepresentation
bin10010001111001…
…00011111110100
3101122212011100100
421013210133310
5303130320234
623102514100
73535206132
oct1107443764
9348764310
10152979444
11793977a2
1243295930
13259030a7
1416462752
15d66c399
hex91e47f4

152979444 has 18 divisors (see below), whose sum is σ = 386698130. Its totient is φ = 50993136.

The previous prime is 152979443. The next prime is 152979467. The reversal of 152979444 is 444979251.

It can be written as a sum of positive squares in only one way, i.e., 128595600 + 24383844 = 11340^2 + 4938^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 152979444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152979443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2124679 + ... + 2124750.

Almost surely, 2152979444 is an apocalyptic number.

It is an amenable number.

152979444 is an abundant number, since it is smaller than the sum of its proper divisors (233718686).

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

152979444 is a wasteful number, since it uses less digits than its factorization.

152979444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249439 (or 4249434 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 152979444 is about 12368.4859218904. The cubic root of 152979444 is about 534.8241702450.

The spelling of 152979444 in words is "one hundred fifty-two million, nine hundred seventy-nine thousand, four hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 4249429 8498858 12748287 16997716 25496574 38244861 50993148 76489722 152979444