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30440135 = 511553457
BaseRepresentation
bin111010000011…
…1101011000111
32010021112000102
41310013223013
530243041020
63004234315
7516510515
oct164075307
963245012
1030440135
1116201140
12a23b99b
1363ca41b
1440854b5
152a14475
hex1d07ac7

30440135 has 8 divisors (see below), whose sum is σ = 39848976. Its totient is φ = 22138240.

The previous prime is 30440119. The next prime is 30440141. The reversal of 30440135 is 53104403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30440135 - 24 = 30440119 is a prime.

It is a Duffinian number.

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, 276674 + ... + 276783.

It is an arithmetic number, because the mean of its divisors is an integer number (4981122).

Almost surely, 230440135 is an apocalyptic number.

30440135 is a deficient number, since it is larger than the sum of its proper divisors (9408841).

30440135 is a wasteful number, since it uses less digits than its factorization.

30440135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553473.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30440135 is about 5517.2579240054. The cubic root of 30440135 is about 312.2354368836.

Adding to 30440135 its reverse (53104403), we get a palindrome (83544538).

The spelling of 30440135 in words is "thirty million, four hundred forty thousand, one hundred thirty-five".

Divisors: 1 5 11 55 553457 2767285 6088027 30440135