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155039004 = 22324306639
BaseRepresentation
bin10010011110110…
…11010100011100
3101210201210112100
421033123110130
5304142222004
623215005100
73561544521
oct1117332434
9353653470
10155039004
117a57410a
1243b09790
1326174673
141683b148
15d927739
hex93db51c

155039004 has 18 divisors (see below), whose sum is σ = 391904240. Its totient is φ = 51679656.

The previous prime is 155038981. The next prime is 155039011. The reversal of 155039004 is 400930551.

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

It is a super-2 number, since 2×1550390042 = 48074185522624032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2153284 + ... + 2153355.

Almost surely, 2155039004 is an apocalyptic number.

It is an amenable number.

155039004 is an abundant number, since it is smaller than the sum of its proper divisors (236865236).

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

155039004 is a wasteful number, since it uses less digits than its factorization.

155039004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306649 (or 4306644 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 155039004 is about 12451.4659377922. The cubic root of 155039004 is about 537.2135891813.

Adding to 155039004 its reverse (400930551), we get a palindrome (555969555).

The spelling of 155039004 in words is "one hundred fifty-five million, thirty-nine thousand, four".

Divisors: 1 2 3 4 6 9 12 18 36 4306639 8613278 12919917 17226556 25839834 38759751 51679668 77519502 155039004