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930990 = 23531033
BaseRepresentation
bin11100011010010101110
31202022002010
43203102232
5214242430
631542050
710625154
oct3432256
91668063
10930990
11586515
1238a926
132679a8
141a33d4
15135cb0
hexe34ae

930990 has 16 divisors (see below), whose sum is σ = 2234448. Its totient is φ = 248256.

The previous prime is 930989. The next prime is 930991. The reversal of 930990 is 99039.

It is an interprime number because it is at equal distance from previous prime (930989) and next prime (930991).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 31033 = 930990 / (9 + 3 + 0 + 9 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (930991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15487 + ... + 15546.

It is an arithmetic number, because the mean of its divisors is an integer number (139653).

2930990 is an apocalyptic number.

930990 is an abundant number, since it is smaller than the sum of its proper divisors (1303458).

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

930990 is a wasteful number, since it uses less digits than its factorization.

930990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31043.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 930990 is about 964.8782306592. The cubic root of 930990 is about 97.6446242907.

The spelling of 930990 in words is "nine hundred thirty thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 31033 62066 93099 155165 186198 310330 465495 930990