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30313790 = 2513233183
BaseRepresentation
bin111001110100…
…0110100111110
32010001002200222
41303220310332
530230020130
63001421342
7515443253
oct163506476
963032628
1030313790
1116125221
12a19a852
136384a70
14405142a
1529dbce5
hex1ce8d3e

30313790 has 16 divisors (see below), whose sum is σ = 58762368. Its totient is φ = 11192736.

The previous prime is 30313781. The next prime is 30313799. The reversal of 30313790 is 9731303.

It is an interprime number because it is at equal distance from previous prime (30313781) and next prime (30313799).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30313799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116462 + ... + 116721.

It is an arithmetic number, because the mean of its divisors is an integer number (3672648).

Almost surely, 230313790 is an apocalyptic number.

30313790 is a deficient number, since it is larger than the sum of its proper divisors (28448578).

30313790 is a wasteful number, since it uses less digits than its factorization.

30313790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233203.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 30313790 is about 5505.7960369051. The cubic root of 30313790 is about 311.8028490945.

The spelling of 30313790 in words is "thirty million, three hundred thirteen thousand, seven hundred ninety".

Divisors: 1 2 5 10 13 26 65 130 233183 466366 1165915 2331830 3031379 6062758 15156895 30313790