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153978054 = 23233135993
BaseRepresentation
bin10010010110110…
…00010011000110
3101201201220011220
421023120103012
5303404244204
623140141210
73546535416
oct1113302306
9351656156
10153978054
1179a09a9a
1243697806
1325b92799
1416642646
15d7b81d9
hex92d84c6

153978054 has 32 divisors (see below), whose sum is σ = 331720704. Its totient is φ = 47509440.

The previous prime is 153978037. The next prime is 153978059. The reversal of 153978054 is 450879351.

153978054 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1539780542 = 47418482227253832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 153977997 and 153978015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153978059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13719 + ... + 22274.

It is an arithmetic number, because the mean of its divisors is an integer number (10366272).

Almost surely, 2153978054 is an apocalyptic number.

153978054 is an abundant number, since it is smaller than the sum of its proper divisors (177742650).

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

153978054 is a wasteful number, since it uses less digits than its factorization.

153978054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36052.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 153978054 is about 12408.7893849481. The cubic root of 153978054 is about 535.9853782118.

The spelling of 153978054 in words is "one hundred fifty-three million, nine hundred seventy-eight thousand, fifty-four".

Divisors: 1 2 3 6 23 31 46 62 69 93 138 186 713 1426 2139 4278 35993 71986 107979 215958 827839 1115783 1655678 2231566 2483517 3347349 4967034 6694698 25663009 51326018 76989027 153978054