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30438393054 = 2315593254051
BaseRepresentation
bin11100010110010001…
…010000010011011110
32220120022012120120220
4130112101100103132
5444314212034204
621552212222210
72125202033466
oct342621202336
986508176526
1030438393054
11119aa752243
125a9590a966
132b41159984
14168a764ba6
15bd23731d9
hex7164504de

30438393054 has 16 divisors (see below), whose sum is σ = 60915853440. Its totient is φ = 10139619800.

The previous prime is 30438393049. The next prime is 30438393061. The reversal of 30438393054 is 45039383403.

It is a junction number, because it is equal to n+sod(n) for n = 30438392997 and 30438393015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1617672 + ... + 1636379.

It is an arithmetic number, because the mean of its divisors is an integer number (3807240840).

Almost surely, 230438393054 is an apocalyptic number.

30438393054 is an abundant number, since it is smaller than the sum of its proper divisors (30477460386).

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

30438393054 is a wasteful number, since it uses less digits than its factorization.

30438393054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255615.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 30438393054 in words is "thirty billion, four hundred thirty-eight million, three hundred ninety-three thousand, fifty-four".

Divisors: 1 2 3 6 1559 3118 4677 9354 3254051 6508102 9762153 19524306 5073065509 10146131018 15219196527 30438393054