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90348007 = 213142397
BaseRepresentation
bin1010110001010…
…01100111100111
320022000011011111
411120221213213
5141112114012
612544245451
72144642161
oct530514747
9208004144
1090348007
1146aa9882
1226310887
1315944479
14bddb931
157de9ba7
hex56299e7

90348007 has 4 divisors (see below), whose sum is σ = 90392536. Its totient is φ = 90303480.

The previous prime is 90348001. The next prime is 90348017. The reversal of 90348007 is 70084309.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70084309 = 72839623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-90348007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90348007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90348001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19068 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (22598134).

Almost surely, 290348007 is an apocalyptic number.

90348007 is a deficient number, since it is larger than the sum of its proper divisors (44529).

90348007 is a wasteful number, since it uses less digits than its factorization.

90348007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44528.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 90348007 is about 9505.1568635136. The cubic root of 90348007 is about 448.7173466514.

The spelling of 90348007 in words is "ninety million, three hundred forty-eight thousand, seven".

Divisors: 1 2131 42397 90348007